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Good afternoon. Yes, though you would have the burden, you could overcome that burden by proving any one or more of the following....lack of requisite mental capacity, Fraud, duress, Coercion, and/or undue influence. AT the time of any change to the trust...he closer she was to death, the more advanced her dementia was, and the more drugs she was taking, the easier time you'll have having it overturned.

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