Legal Question in Family Law in Florida

Please have a lawyer review the documents. If he deeded the property to her while alive then there is not much you can do.

If she was on the title to the house when he died, she became sole owner.

I can't imagine why she needed to do a quit claim deed. Did she sign his name? I suggest you talk to an attorney. When your father died, did he have a will. If not, you and your siblings are entitled to a one-half interest in the property. She would get a life estate with remainder to the lineal descendants of the decedent unless she made the election to take one-half.