You absolutely have a chance at law school admission to either SMU or Texas Wesleyan the Dallas Schools with your GPA assuming your LSAT turns out ok, which I imagine it will.
Once you get your LSAT score you will be in a unique situation and if I was you, which I am not I might consider Wesleyan over SMU, because it is 14k per year cheaper resulting in a minimum of 42,000 in savings over three yeras. Additionally, you are much more likely to get a merit based scholarship from Wesleyan than SMU I know when I was a 0L I had a lower GPA than you, but a decent LSAT score and was offered a 15k per year scholarship so it would have only been 13,000 per year, which is not bad. SMU is 42k per year and your are less liekly to recieve scholarship money from there.
Money will be a big concern since you are starting at a later age and will have less time to recopu your investment and having to support two kids in College you will not want the money to dry up.
I also think you should know that at any ABA law school the education is identical, which I believe might differ from Medical School. In medical school there is equipment, labs, etc, which I believe would result in some schools clearly being better than others. However, in law school all you do is read Supreme Court Cases from a book there is no equipment etc you just read the same casebook written by the big time professors. At almost any law school you will read the Con Law book written by Chemerinsky and read the Marbury v. Madison, Lemon, etc cases, which all say the same thing.
At the end of your three years you will then sign up for BarBri or Kaplan and be in a room with law students from all the different schools again learning the same thing.
Additionally, with your desire to be in health law you would probably be a shoe in with an M.D. and J.D. that is very rare so I think your much better off going to the cheaper school.
However, you do want to visit the schools and see if they are a fit. Although the education is the same schools do have different cultures and you should talk to students, professors, admins, and walk around the school to see if it is a fit for you. If you really feel good about SMU and not Wesleyan then SMU may be worth the extra money.
Good luck whatever you decide.