Petersen Law Firm
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Petersen Law Firm
With so much on the line, you deserve to work with an attorney who has your best interests in mind - an attorney who is willing to go above and beyond for you. I am attorney Riisa Petersen Mandel, a Tucson family law attorney with more than 14 years of experience. I will handle your case with determination, grit, and unwavering dedication to you.

I will take the time to get to know you and understand your goals and priorities for the future. Together, we will address the unique issues that come up in our case so you can move forward confidently. If you are facing divorce, child custody determinations or another personal issue, you are probably concerned about the future.
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I am attorney Riisa Petersen Mandel, founder of Petersen Law Firm, PLLC in Tucson, Arizona. Family law is about personal issues and I believe you deserve a lawyer who will give you personal service. When you come to my office to discuss your concerns, you will meet with me personally. I have more than a decade of experience, both as a former prosecutor and as a criminal defense and family law attorney in private practice.
Born and raised in El Centro, California, Riisa Petersen Mandel has dedicated her career to protecting the rights of her fellow Arizonans. The Justice System can be challenging to navigate alone, and after practicing law since 2006, Riisa has built a reputation based on experience, determination, grit, and an unwavering dedication to YOU, her client.
Lisa Ballard was born and raised in Rockford, Illinois. She relocated to Tucson, Arizona in 2011. She comes to Petersen Law Firm with a background from paralegal work, factory jobs, restaurant industry and helping families with end of life care. She has a huge heart and is an extremely hard worker.
Amanda Suan was born and raised in Tucson, Arizona. After graduating highschool she joined the United States Air Force, from which she retired in 2018. Amanda has worked exclusively in family law, she joined our firm as a legal assistant and a paralegal intern. In December of 2020 Amanda received her Paralegal Degree from the American Bar Association's Approved Paralegal Program at Pima Community College.
If you are dealing with a legal issue involving your family, this may be the first time you have had to deal with the court system. That inexperience can be costly. The outcome of your case can affect your property, your relationships and your future financial obligations. You do not have to navigate the legal system alone.
Reviews (10)
Mohommad Miqbel
Mohommad Miqbel
Jan 04, 2022
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I was feeling down, scared, and as if the court systems were designed to be against me. I spoke to plenty lawyers before hiring Riisa, and she was the one I am so glad I chose to represent me. Riisa and her staff, are very professional, and communicate like no other, every step along the way I knew what to expect. My case lasted 2 years due to covid and they were there with me along the entire way. The way Riisa spoke, and presented herself during court sessions, I knew she would either beat the case or get it dismissed, and sure enough she got my case dismissed. If you’re looking for a lawyer
Lori Gonzalez
Lori Gonzalez
Oct 13, 2021
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Positive: Professionalism, Quality, Responsiveness
Had a great experience with Petersen Law Firm. Riisa and her team are highly knowledgeable, attentive and caring. Thank you Riisa, Lisa, and staff for getting the job done! Extremely happy with the outcome. Highly recommend Petersen Law Firm.
Alan Thereault
Alan Thereault
Aug 17, 2021
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Monali Amin was perfect. She took over after my previous lawyer bungled a child support termination request for 3 1/2 months. She knew the court system, processes, and staff like the back of her hand, and resolved my case in about 2 weeks. She was very thorough, responsive, professional, and expert-level competent. I would trust her again for any family law needs, without hesitation... she is that good.
Chris Leon
Chris Leon
Aug 15, 2021
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Positive: Responsiveness
Had an incredible experience with Petersen Law, everyone at the office is super friendly, very attentive and plain and simple just gets the job done. I would highly recommend.- Chris L.
Clinton Sanders
Clinton Sanders
Apr 12, 2021
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Positive: Professionalism, Responsiveness, Value
Riisa and her team were knowledgeable, attentive and committed to helping me through the entire process of my case and I was extremely pleased with the outcome. I would definitely recommend the Petersen Law Firm to anyone in need of a family law attorney in Tucson.
Laura McReynolds
Laura McReynolds
Apr 12, 2021
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Rissa and her staff have had the most profoundly positive impact on the lives of me and my infant. My situation was very sensitive and during the course of my custody battle there were times when we had to really work together to find a solution. She is authentic and transparent in her knowledge of Arizona family law. She doesn’t sugar coat the issues but she certainly makes sure that you understand your options. I appreciate that about her so much. On the days that I was struggling to see the light at the end of the custody tunnel, her staff members Lisa and Amanda were extremely comforting
Robert Valencia
Robert Valencia
Feb 17, 2021
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Positive: Professionalism
Riisa is one of the best and most committed attorneys in Tucson. She fought for me, and won! I was extremely pleased with the outcome of my case. I have, and will continue to recommend Riisa and her team to anyone in need of a top notch family law attorney.
Sheryl Hinojos
Sheryl Hinojos
Jul 31, 2020
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Positive: Professionalism, Responsiveness
Riisa and her team are fabulous! I am so grateful I found her to represent me in my case. She gives it to you straight and honest! Thank you Lisa for answering my millions of questions without judgement. I highly recommend Petersen Law Firm and will continue to be a very satisfied client. A+++
Kayla Bennett
Kayla Bennett
Jun 30, 2020
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If you are looking for a team that genuinely cares for you and your needs at probably one of the toughest times in your life, this is the law firm. From the initial phone call they have showed me what I am navigating matters, and I am not just another retainer. Lisa and Risa are efficient and always communicate in a timely manner. I feel confident in my situation having Risa as my attorney and her amazing team working for my family.
Maritza Gonzales
Maritza Gonzales
Nov 19, 2019
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Riisa is the best family law attorney hands down. Her and her staff are professional and knowledgeable as well as considerate to our needs. My husband and I have utilized her services for the last 5 years and have been very happy with every outcome. Riisa knows her stuff and has always given us sensible and honest advice. We have and will continue to recommend her to anyone we know!! We are so glad to have her on our side!