Legal Question in Family Law in Texas

You should immediately file a Suit Affecting the Parent Child Relationship (or divorce) and ask the court to name you as the parent with the exclusive right to designate the primary residence of the child.

When you file your suit, seek an ex parte temporary restraining order that orders the immediate return of your daughter to you.

Then you're going to need to locate them (credit card bills? cell phone call records? Facebook postings?) and have your wife served.

This is a serious problem and you absolutely must hire a family law attorney to help you through it. I'm sorry you and your daughter are having to endure this. Good luck!