Licensed in Missouri & Illinois. Compassionate mediation. Fierce advocacy when it matters.
Mary C. Neff has spent her career helping families in the St. Louis metro and Monroe County, Illinois navigate some of life's hardest moments: divorce, custody disputes, and everything in between. With advanced degrees in both law and family sciences, and dual licensure in Missouri and Illinois, Mary brings a rare combination of legal expertise and genuine human understanding to every case.
Born and raised in Monroe County, Mary knows these communities — and these courts — from the inside. After earning her J.D. from Saint Louis University School of Law and a Master's in Family Sciences, she built her reputation as a dual-licensed attorney, certified mediator, and court-recognized Guardian ad Litem.
Meet Mary C. NeffFamily law representation and mediation services for clients in Missouri and Illinois.
Strategic representation for contested and uncontested divorce in Missouri and Illinois.
Learn moreHelp both parties reach a fair, lasting agreement without the courtroom cost.
Learn moreProtecting your children's best interests, guided by a Master's in Family Sciences.
Learn moreCourt-appointed advocacy focused entirely on the best interests of the child.
Learn moreNeutral, structured resolution outside the courtroom for a wide range of disputes.
Learn morePractical guidance from a dual-licensed family law attorney.
January 15, 2025
Navigating a divorce in Illinois can feel overwhelming. Here's what the process actually looks like, step by step.
Read article →January 22, 2025
If you or your spouse lives on either side of the state line, understanding the differences matters.
Read article →February 1, 2025
Mediation isn't just for amicable splits — it can work even when things are complicated.
Read article →Schedule a free consultation with Mary and get clear on your options — no obligation, no pressure.
Schedule Your Free ConsultationOr call: (314) 454-9100