Your attorney may initiate unlawful detainer process. Link explains: https://selfhelp.courts.ca.gov/eviction

Your attorney may file RFO to change monitor.

Hire PI to locate other party. Consider serving by publication. Link...

Yes. DCS may place child and not honor POA. You need attorney assistance to contact DCS and petition for placement with you.

I agree with colleagues and add: You may sell or transfer your interest and thereby sever your joint tenancy interest. Begin by reviewing will,...

Petition to probate mother's estate must be filed. All children and grandchildren entitled to receive notice of petition for probate. You wwill...

Any person interested in the welfare of a minor may petition the court for appointment of a Title 14 guardian. A guardian may be appointed when...

File probate in jurisdiction in which decedent resided at date of death.

Possibly. Be very vigilant regarding service of process. Review all facts related to alleged loan with BK counsel.

Impossible to evaluate based on minimal information provided. Review with probate counsel.