I feel so bad for you. It would hurt me also if I had seen one of my quilts so disregarded. Maybe ask her Mother during a conversation, if the girl just didn't care for the colors or pattern........there might be a reason for it being out there and just had not been cleaned and brought back in.
I don't do too many for my relatives, as I don't really know how they feel about quilts. However, I do sew for a "Prayers & Squares" organization from church. We make up lap size quilts and they are given to people that have their names put in for prayers. And I give lap quilts to assisted living homes for elderly people that don't have any relatives any more. There is also a need through the Linus Project (that someone mentioned) for quilts for children in hospitals. These quilts are very well received. The elderly and sick/needy children usually all love their quilts.
So please try to find an outlet for you creativeness that will be appreciated. I have loved sewing since I first took it in Home Ec in the 7th grade. I almost have to do it......and I do almost every day since retiring.