I live in Texas, my adopted son is in prison for burglary of his ex's parents house. They have two children together, since I am no blood relation to the children, can I still get visitation? I don't have any kind of relationship with the children. I just want to be able to take them to the prison to visit their father, there ages are 3 and 5. Also, how much would it cost me to go to court over this? Also, my son and his ex were never married.