Is there a length of time that a person needs to live after writing a will?

Q: I have an aunt who changed her will recently and she did it to spite the one son because of his remarriage. Where originally, he was to inherit 1/2 of her estate, and the other son the other half. He now has been reduced to 1/8 of her estate, and her riding mower, with the remaining being divided between his ex-wife and the adult children. Is there a length of time she needs to remain alive to be certain he will not try to contest it? (Delmont, PA)

A:  I am not aware of any such law. If she is competent, not under undue influence or coercion, and it has been executed in compliance with the law, her Last Will and Testament is presumed to reflect her testamentary intentions.

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