What a great haul!!! Good for you!
Twice I have been approached at quilting events by people asking if I would take and use their inherited stashes. Those people were charming. One was a lady so disabled she could hardly move, so sorting through her great aunt's stuff must have been an ordeal for her, so I would have understood if she had been cranky, which she was not. DH nudged me into offering her a lap quilt that I had just finished. She was very happy with it.