Go see an experienced family law attorney in your area. There are several excellent family law attorneys in the Katy area. I don't know if you will be able to do so if the child has been legally adopted but it's worth a consultation with an attorney to find out.
Fran Brochstein has over 20 years legal experience & enjoys educating the public about Texas laws. She is a full-time family law mediator in the Houston area. If you found this answer "helpful" or "best answer", please select the button to show your appreciation. Please understand that this is not a personal consultation and in no way creates an attorney-client relationship. You are strongly encouraged to consult with an attorney in your county in person about your specific legal problem. You can contact her at 713-805-9591 - 7 days a week - her personal cell phone.