Child support ?

If you were already served you will not be served again. You have to check with the clerk's office to see if the matter is still set for hearing....

Can I change my daughters name to my married name if I am her only legal parent?

Two ways: the truth and lying. Truth: you have to make reasonable effort to give bio dad notice. Takes a bit longer. In the end you can relax...

After 16 years my ex is granted child support.2 weeks later my daughter is living with me, he won't stop the payments. How do I

Contact the Texas Attorney General's Office: https://www.texasattorneygeneral.gov/child-support

Would she have to give the ring back if he cheated on her several times and demonstrated signs of violence?

If you are married then the wedding ring is a vested gift. It is yours to keep. Start consulting with attorneys asap. Make a plan!

How can we stop my husband ex from keep filing cases against him and taking him to court since he has won full custody ?

Stop it by hiring a good attorney to step in and resolve it.

Sounds like this will be relatively easy to handle. There's no such thing as an "average" because too many factors come into play in cases like...

Why was my modification denied, when the other parent is making is more than what he's already ordered to pay?

Sounds like you went through the AG's office. The AG is a state agency and the AG is there to look out for the state - not you or the child. You...

Does my husband have any rights to file a lawsuit against his ex-wife for their home not being sold effectively?

The beginning of the answer to this is the exact wording in the divorce decree. Husband needs to take the decree to an experienced divorce attorney...

What can I do if my ex refuses to tell me why she took my child to the doctor?

Part of this depends on the rights and duties spelled out in the court orders. Sit down and read that entire section.

What is the best way to go about getting possession or visitation of my son?

Yes - if there are no court orders you are free to take your son. Be careful on how you handle dealing with the military. You do want to assert...