I agree that not treating all family members equally does complicate things, and does cause long-lasting resentment. If you want to preserve good relationships within the family after your mother's death, it might be worthwhile getting good legal advice, and then talking about possible solutions with your siblings.I think your mother has unnecessarily made things complicated by not treating all family members equally. A solicitor once offered very sage advice re. wills ie - don't try and overcomplicate things as it can have unintended consequences. In your case, I can foresee some animosity when they discover what their mother, no doubt with the best of intentions, has done.