Can I keep my parents from seeing my child when he is in my ex-husbands custody ?

You cannot unless they are a danger to your child. The other responses are accurate.

What if my ex didnt provide his income and expense form on his response

Request that he provide one first prior to involving the court.

How can one get help for advice

Try to find a lawyer as soon as possible to prepare for the hearing on the restraining order. AVVO has several methods for you to find a lawyer.

I tried mediation and she refused joint mediation and demanded 100% custody

These matters may be raised in any RFO to modify custody. Also, if it she does not cooperate, then you may be able to wrest away legal custody....

Who is responsible for the debt/difference from value to loan? Is she responsible to pay back half of payments I already made?

Usually each party is responsible for one half of the community debts.

Baby born today claimed 2 b my sons. Girl was doing substances wile pregnant. Can we have a hospital test both 4 substances?

Your requests may also be accomplished by a court order through the paternity case.

How can a step-parent be added onto a case document for custody between two biological parents?

The court should grant orders which insert you as one that may make decisions under certain circumstances.

How to properly transition to terminating parental rights?

I agree with my colleague. I do not believe that under such circumstances that you will be able to terminate bio dad's rights. However, you may...

What to do about communicating with the co parent when he does not respond?

If one of the parties fails to communicate it may give rise to an Order awarding full legal custody to the other parent or tie breaking authority.

You should probably start by speaking to your sister's lawyer. Dependency is different animal than general family law and you need to contact...