can a 17 year old mentaly disabled female move out of her house without a parents consent
No. - she is a minor child in the eyes of the State of Texas.
If she is truly mentally disabled, you might want to consider filing for a court order that gives you "control" of her after she reaches the age of 18.
You need to talk to an attorney in your county that can help you.
I hope this information is helpful.
Good luck!
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