Sorry to hear about your situation, I am going through a very similar experience. First off, DO NOT SIGN THE QUIT DEED. It seems like your aunt is putting alot of pressure on you quickly because she wants something you have. Don't let her bully you into giving her 15k. Just say no. Nothing in probate happens overnight, so take some time with your decisions.
You need to read the Will carefully or have a professional read it for you. Everything owed to you is spelled out there. If your aunt is the Trustee and she has been abusing her privs then she is in really deep doodoo.
Good luck!

