Legal Question in Family Law in Texas

I'm sorry you're being out through all this. First of all, I don't know, and neither do you, whether she's your biological daughter or not. Somehow, it wouldn't much surprise me if that was just the latest thing her mother cooked up to try to hurt you/get you off her back/draw attention away from whatever this possible abuse situation is. It's actually possible that she herself doesn't even know who the real father is.

I'm assuming from what you've saud here there is not currently a custody order or anything else in effect. Even if tou signed an acknowledgment of paternity, even if you've been paying her mom support all along, unless there is a court order out there saying that you have the right to have your daughter with you at certain times, you don't really have any enforceable rights at all. If you want to change that, you'll have to go to court to formalize things (file a SAPCR: "Suit Affecting Parent-Child Relationship"). If she wants to raise this latest claim that you're not the biological father at that point, she can do that, and the court will order that you and the child be DNA tested so that can be determined. If that happened, and it was determined that you're not the father, you wouldn't have legal custody or any of the normal parental rights and responsibilities (re child support, school, health care, finances, etc.), but I believe that you would be allowed periodic access to her, so that your relationship wouldn't be completely destroyed. Good luck.