In a divorce, she is entitled to an equitable share. If not divorced, she may have some claims she could make at father's death.

Petition to be in charge of the mother and or father so that you can address the parents’ assets. See an attorney.

What can be done about what? Go see an attorney..........................................................................

Usually, the probate court would give you notice of your sister’s petition to be the administrator. See an attorney.

No, you cannot sue your lawyer in probate court. ........................................................

It depends. See an estate attorney with all the information/documents you have...............................

No idea. See an attorney. The Zillow/trullie estimate is worth about as much as you paid for it.......

Your attorney does not want to represent you anymore. Go get another attorney.........................

You are the successor-trustee? Beneficiary? See an attorney. Is the house in the trust? Has the mother’s estate been probated? Is the house still...

File a trust? You mean make a trust? Sure. Most trusts begin their lives as revocable trusts, though. Go see an estate attorney for advice on how...