:lol:h my gosh! Ignore the mess; I would refuse to be drawn into their quest for the $$$. (:iagree: Many people show their donkey-butts trying to get $$$ after someone dies.) Your bil deserves some peace and any $$$, not your sister or niece.
Niece may be sweet and generally caught in the middle, but I wouldn't feel comfortable taking advantage of bil to assist sister in a greedy grab for the money.
And I'm really sorry for your loss and further hurt from family. :grouphug: It stinks.