You won the quilt and therefore it is yours to do with as you wish - to use it, give it away, sell it, use it for a doggy bed. The people who made it specifically for raffling, shouldn't judge what the winner does with it. My feeling is that if I donate a piece I've put a bit of me in, I give it unreservedly and just hope that it goes to a good home and is welcomed wherever it may land. That being said, there are times when we all do or not do things for the sake of maintaining friendships.