Hi eagleriver, I'm sorry to hear about what your daughter is going through.
I don't live in Texas but just did a Google search...try the following links:
Texas Free Rehab Centers
The Texas Department of State Health Services Mental Health and Substance Abuse Division
Texas Department of State Health Services Mobile
Free Rehabs in Texas | Sober Solutions
Free Rehabs in Texas | Sober Solutions
State Funded Rehab in Texas:These types of facilities receive some form of funding through grants or subsidies from the government at a state or county level.
Also, please check out the Friends and Family forum on this site as well.
Best of luck to you!