Texas's protective services (DFPS)'s domestic abuse hotline has an online site that she can report through if she can't get access to a phone:
https://www.txabusehotline.org/Login/Default.aspxIf she gets access to a phone, the hotline number is 1-800-252-5400.
If they turn her down, she might want to try getting a counselor to help at the Texas youth hotline, which is 1-800-989-6884.
More hotlines and info about the Texas DFPS can be found
here.