Is it reasonable to include in a divorce petition that the woman I married "deceived" me about her mental health issues?

You do not have a simple divorce. Hire a lawyer.

We are in the process of our custody case and ex cancelled child support check.

Where is your lawyer? Why are you letting him pay directly instead of through the disbursement unit? An enforcement is the next step but there...

What are my odds of getting temporary orders?

You have facts on your side but that is totally useless if you don't have a lawyer who knows how to develop and present admissible evidence. Hire a...

I need information on the process of a step parent adoption.

Start by hiring a lawyer. This is a highly technical process and the difficult service only makes it more so.

Visitation schedule

You need to sit with a lawyer and understand the legal presumptions at play and the preferences of the judge in whose court you are in.

Hire your own probate lawyer and ask that the executor be replaced. If the executor was not appointed by a court, he has zero power or...

What do i need to do first or who do i need to contact? (montgomery county,TX )

Sit down with a probate lawyer to discuss what you need. It will probably be relatively simple.

Surely you are not going to a jury trial pro se. Your lawyer should be answering these questions for you.

Custody

Hire a lawyer immediately. Don't waiit, or your case will get much harder.

Will a post nuptial or partition agreement protect my spouse?

Don't enter any agreement without both spouses having their own lawyer. The books are full of post - nups that are really the first act of a nasty...