About Tessmer Law Firm

You are more than just a number. Your case is more than just a job. We value every individual that crosses our path, and we aim to provide the best outcome for every case. Tessmer Law Firm, PLLC is owned and operated by Heather Clement Tessmer, attorney at law. She has over 20 years of experience practicing law. Heather graduated from St. Mary’s University Law School and began her career as an attorney in 1999. In 2001, she relocated with her family to San Angelo, Texas, where she opened her own office. In 2005, Heather moved back to the San Antonio area, opening her first office in Fair Oaks Ranch, Texas. Since 2005, Tessmer Law Firm has continuously grown and is now headquartered at the Northwest Center building in San Antonio, Texas.

Heather wanted to create a law firm that made every client feel like family. She has put an end to the stereotypical view of a lawyer and law firm. By adopting an inclusive, diverse, female-led, compassionate, and strong environment, Heather changed the lives of her employees, peers, and clients. Known for her edgy “Ever Argue With A Woman?” ad campaign, Heather offers legal services statewide and is board certified in Family Law. Tessmer Law Firm, PLLC will be your forever firm, assisting you through all facets of family law, estate planning, and so much more! Contact us to learn about our services and how we can help you with your situation.

Our Attorneys

About Tessmer Law Firm - Katherine Flores

Katherine Flores

Director of Legal Services
Managing Attorney

Texas Law License, Number 24113660

Doctor of Jurisprudence

St. Mary University, School of Law- San Antonio, Texas

Bachelor of Arts in Criminal Justice

St. Mary University, School of Law- San Antonio, Texas

Awards

Best San Antonio Lawyers, August 2020
Outstanding Women in Law, April 2021
Best San Antonio Lawyers, July 2021
Rising Star Lawyers. January 2022
Outstanding Women in Law, April 2022
Best San Antonio Lawyers, July 2022
Outstanding Women in Law, April 2023
Best San Antonio Lawyers, July 2023
Top Family Lawyers, April 2024
Top Attorneys, April 2024
Best SA Lawyers, June 2024
Top Attorneys, October 2024
Top Attorneys, January 2025
Top SA Family Lawyers- June 2025

Mariana-Trevino

Mariana Trevino

Managing Attorney

Texas Law License, Number 24121064

St. Mary’s University School of Law, San Antonio, Texas

Doctor of Jurisprudence

Texas A&M University-Corpus Christi, Corpus Christi, Texas

Bachelor of Science in Criminal Justice

About Tessmer Law Firm - Megan Gherle

Megan Gherle

Senior Associate Attorney

Texas Law License, Number 24116423

St. Mary’s University School of Law
San Antonio, Texas

Doctor of Jurisprudence

University of Texas at San Antonio
San Antonio, Texas

Bachelor of Arts

Jasmine Silva Associate Attorney

Jasmine Silva

Associate Attorney

Texas Law License, Number 24150196

St. Mary’s University School of Law
San Antonio, Texas

Doctor of Jurisprudence

Sam Houston State University
Huntsville, Texas

Bachelor of Arts

Belinda Veliz

Associate Attorney

Texas Law License, Number 24091505

Texas Southern University
Thurgood Marshall School of Law
Houston, Texas

Doctor of Law

The University of Texas at San Antonio
Justice Policy

Zoe Sandoval

Associate Attorney 

St. Mary’s University School of Law
San Antonio, Texas

JD Candidate

The University of Texas
Austin, Texas

Public Relations

Evelyn Bracy

 Law Clerk 

Jayda-Lowe

Jayda Lowe

Senior Paralegal 

Macey Summers

Legal Assistant

Administrative Services

Ana Avila

Administrative Coordinator

Elicia Gonzalez

Administrative Assistant

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