UT and Texas A&M are notoriously difficult to change majors, especially UT. Texas A&M is generally first come first serve, so it helps to apply early, but not a guarantee by far. If she wants to have the option to change majors, I would recommend not going to such a competitive school, like Texas State. It’s in a prime location exactly between Austin and San Antonio, which gives access to both cities with internships and job prospects. UT-Dallas and UT-Arlington are great options with plenty of opportunities, but tend to be nerdy commuter schools.