don't worry over how you feel about quilting. that isn't the issue.
the issue is how you feel about the way your gifts have been treated.
the solution is to never give again to those you know are ungrateful.
there are bazillions of charity organizations who will help you put your quilts into the hands of many who will be deeply touched and forever appreciate your gifts.
tell your DIL what you feel and why you feel that way. then give all your future work to the friends, family and charities you know will treat you and your quilts with the proper respect.