Sorry to hear about your aunt, it sounds like she was a special lady. As for the creeps that were taking her for a ride and the folks that ransacked her house (maybe they were the same people?), just try your best to not let it bother you. One of the unfortunate facts of life is this; Wherever there is a kind-hearted person, there is another person willing to take advantage of that kindness. There's nothing you or I can do about it, so IMO it isn't worth wasting negative energy on.
It seems like she had a positive effect on a lot of people.