Answer depends on type and value of personal property. Probate may/not be necessary. Link provides information: https://www.courts.ca.gov/42629.htm

Yes....................................................................................

Seek independent living arrangements. Leave problems behind you.

Carefully review ORS statute (similar to 116.510) and annotations for answer.

Yes to both Q's.............................................................................

You have not provided critical information regarding situs of trust administration necessary to answer question. Trust litigation depends on...

Yes. Written demand for jury trial required. Calling every other day will not improve your situation. You need attorney assistance.

No "simple form" available to amend complaint. Before attempting to amend, be sure complaint is still amendable. A party can amend its pleading...

Agreement is enforceable. Buyers remorse (alleged bullying) is no defense.

Without written agreement you are not entitled to compensation for services provided to great aunt.