I'm sorry your quilt was mistreated. I know she didn't intentionally try to hurt your feelings. I think most people who are not crafters (in general) don't realize the time and of course the expense in making something. I find in most of my crafting, in alot of instances, it would be cheaper to buy it premade..... but that's the point. You don't get exactly what you want.
Depending on who it is given to, I have actually written the hours to make it on the quilt label. I have a very busy lifestyle. I think when they can see how much time you spend for them, versus doing other things, they have a better appreciation of the gift.
I agree with everyone else, just move on to the next project and enjoy the experience. ;)