You mean a 'quit claim deed'. There is no such thing as a 'quick' deed. As owner you would be responsible for paying taxes, insurance,...

Assuming there is a valid Will you will be entitled to what it gives you after it is probated in the probate court for the county in which your...

Maybe yes. It depends on several factors. You should consult a probate lawyer. You may use the Find a Lawyer link above.

Your Social Security # is your individual tax ID # for purposes of filing your annual form 1040 with IRS.........................................

You may use the Find a Lawyer link above to locate a probate lawyer who practices in the county in which the small estate proceeding was filed.

You have the same rights as your sister to inherit and to administer the estate. The PoA ends at death. However, sister may be on joint accounts...

If you have not already done so, file a claim with your auto insurance carrier in the event you have property insurance or uninsured motorist...

Yes. I would want it for myself if I were doing your job unless the company provides it to ICs [which is unlikely].

Consequences: filing a lawsuit will cost money; Ex will like you less; consultation with lawyer may result in recommendation to file a criminal...

You may not assume ownership either during his lifetime [unless you have a court order resulting from property division connected with a divorce]...