I hate to be uncharitable, but I would ask for it back, photograph it, and tell everyone I know about it. Leaving your quilt in that area, on the floor and within reach of chemicals, was disrespectful. it's not like the roof suddenly sprang a leak. That would be more of an accident to me. Other quilters should know that their quilts could end up on the floor with animals, bleach or not. Your quilter made a conscious decision to do that.
JMO,
Charlotte