Make payments, file petition to probate BF estate, file creditor claim in probate matter. Link provides...

Consider petition for quiet title. You will need attorney assistance.

Mother will need proof of Ukranian dissolution. Consult Ukranian attorney to obtain proof.

If marriage entered in good faith, assemble proof, get divorced amicably, amend the I-751 to request good faith waiver.

Not enough information provided to opine on what interest you may have in property. Assets that do not qualify for a simple transfer process will...

Yes. Bio father may petition for custody and visitation any time untile daughter reaches 18 years of age.

Your attorney may file petition to compel release of funds. Try AVVO "find-a-lawyer" site..

California statutes are controlling.

Funds blocked until daughter reaches 18 years to protect her. Difficult to access early without court order based on good cause to remove...

You will need to file petition for probate and include interest in lawsuit as asset of estate. Link...