Can you cover over the spots with a appliqued label? or write, with permanent pen, a sort of label words trying to cover in and around those areas.... a little here and little there? or FMQ it from the back side and emphasize those spots to make it look like you intended the spots to be there????
At least it's clean and washed... baby quilts will get washed alot more... and the baby won't mind. The mom might not even see that part. Good luck