You can file a modification if you believe his income has grown substantially. But you cannot force him to give you information outside of the...

Am i able to get my child?

Hire a lawyer. CPS can be like a runaway train, so it's best to get in early. The drug tests will be a problem. But it's unlikely the hair...

Will the mother in law get custody of my daughter, even though I am the step parent by law?

Not necessarily. But it's uphill and you need a good lawyer.

What do we need and how much would it cost to get a power of attorney for mom

Take her to a lawyer to get a full set of documents - both financial and medical POAs, a will, and an advance directive. Cost for the set will...

Can I be bought out of my own house?

Sit down with a lawyer who has read your decree.

How can I prevent this from happening

Get court orders ASAP. They'll set out visitation and who has what rights with regard to the child.

Can I subpoena the ad litem attorney?

Where is your attorney? This does not sound like something that should be handled pro se.

Can he hire a Texas attorney? how long would the process take to finalize?

If the son lives in Texas and any property they own is in Texas, then he can go ahead here. Otherwise he may do better filing in Mexico.

Would I be able to file temp support papers myself even if i have an attorney?

Your lawyer represents you. That's who should file for temporary support on your behalf.

Can I fight for visitation for the child?

Your case would have been stronger 2 years ago. Sit down with a lawyer to discuss the facts and your case.