Mary is a fierce client advocate and systematic problem solver with over a decade of litigation experience.
She has a detail-oriented and collaborative approach to litigation and solving client concerns. Mary has guided numerous clients through the litigation process at every level, including pre-litigation strategy and risk analysis, written discovery, depositions, dispositive motion practice, mediations, arbitrations, trials, and appeals. She has litigated cases in state and federal courts across multiple states and federal jurisdictions, including Texas, New Mexico, Georgia, Tennessee, Kansas, and Florida, as well as handled matters in AAA and JAMS arbitration proceedings. Mary focuses on McDowell Hetherington’s Health Care, Energy, Commercial, and Personal Injury Litigation sections. Her current practice includes handling breach of contract, bad faith, and deceptive trade practices claims; health and managed care disputes between hospitals and provider groups regarding provider agreements, billing practices, and ERISA benefit denials; and energy-related contractual disputes and class action lawsuits, including NAEBS and ISDA negotiation and interpretation.
Mary graduated from University of St. Thomas in Houston, Texas and graduated from Baylor Law School. As a law student and an undergraduate, Mary competed nationally in multiple moot court and mock trial competitions, where she earned multiple best appellate brief and top speaker awards. Mary volunteered with the Baylor Law School Immigration Clinic, helping individuals complete DACA applications. She also first and second chaired dozens of jury trial cases while volunteering with the City of Angleton Municipal Prosecutor’s Office upon graduation from Baylor Law School. While an undergraduate, Mary also volunteered with Memorial Assistance Ministries. Prior to joining McDowell Hetherington, Mary honed her litigation skills at two boutique Houston-area firms.
During her time outside of the office, Mary enjoys hiking and traveling with her husband and son, cooking, and practicing yoga.
- Handled numerous matters for national and international corporations involving natural gas contractual disputes.
- Handled multiple personal injury and products liability matters for nationwide automotive manufacturer.
- As first chair counsel, obtained favorable arbitration award in matter involving nursing home neglect (2017).
- As second chair counsel, obtained favorable jury trial outcome in person injury matter (2021).
- Texas Rising Stars – Civil Litigation: Defense (2025)
- Best Lawyers: Ones to Watch® – Commercial Litigation (2025)
- Baylor Law School Dean’s List
- Order of the Barristers
- Phi Alpha Delta
- University of St. Thomas Dean’s List (2006-2010)
- University of St. Thomas Honors Program (2006-2010)
- Sigma Tau Delta, English Honors Society President (2008-2010)
- Highest ranked English undergraduate (Spring 2010)
- Lone Star Lawyers Podcast, Monday Mentors Series (July 2021)
- State Bar of Texas (Women in the Law and LGBTQ+ Sections)
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Nine MH Attorneys Named 2025 Texas Super Lawyers & Rising Stars
09.18.25
September 18, 2025
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McDowell Hetherington Attorneys Recognized By Best Lawyers®
08.15.24
August 15, 2024

