Poster seems to unsure as to what the father's will actually says and I wondered whether stepmother was telling the truth about what was in it (she may be telling the truth) and I was wondering whether she possibly withheld it from being probated. If she did withhold it and probate wasn't done, then the poster needs to find out if it was probated or not, because if it wasn't the poster might have inheritance rights she may want to assert under intestate law depending on the total value of the assets.
Yes, it's true that she doesn't need to leave them anything in HER will. I just want the poster to find out if he/she was in fact disinherited from the father's will or not or just not mentioned in it at all.