[greglepore]

Almost all states honor a will-with some exceptions-in some states a spouse can "elect against" a will. Probate is mostly to assure debts get paid before distribution.

Ex spouses are non entities for estate purposes-they get nothing everywhere I know of-assuming x means final divorce granted.

If house is in moms name, it either needs to be willed to her or deeded to her with life estate to mom. Later is more simple. Otherwise likely she splits with sis.