It's gorgeous, wonderful fabric choices and beautifully done. What you did was a wonderful thing, and if it's hanging where folks who are facing the fear of a terrible illness can enjoy it and find some distraction and pleasure in its beauty, that is worth more than somebody's cheapness can ever be.
In each of the last two years, I donated a full sized quilt. Both were professionally quilted, as the actual quilting is definitely not my strong suit. One, like yours, did not raise enough to cover the cost of my materials, let alone the quilting I paid for. Although I was disappointed, esp. as the family the fund raiser was for didn't even acknowledge it, I did another the following year. The exact opposite happened - much money was made, a young family with a catastrophically ill mother was helped, and many folks commented on how beautiful it is. The experience has caused me to think more carefully about causes that I will donate quilts to; I'd definitely do it again for a cause that was meaningful to me.
You should be proud of your beautiful work, and the generousity with which it was given.