Downloadable forms for eFiling, Divorces, and Suites Affecting the Parent-Child Relationship, Child Support, Hail Claims, Legal, LegalEase, and Passports. These forms and instructions are available in the General Clerk's Office, Room 108, in the Nassau County.This chapter of the Texas Family Code describes who can file a SAPCR, how they must do so, and what the petition must contain. Texas Family Code, Chapter 103. Petition for (Custody) (Visitation). This article discusses registering other states' custody and support orders in Texas so that Texas courts can change and enforce them. The below links provide useful free forms and guides pertaining to child custody in Bexar County. You will need to fill out a Civil Case Information Sheet form, which you can get at the courthouse. Respondents (family court). If you receive a custody petition, you should file an answer or a cross-petition.