I am so glad the quilt has been found.
When my Oma moved into Assisted Living, my father eventually purchased a cabinet with a lock on it that only her caregiver had access too. He said the $100 or so spent on the cabinet saved him many hundreds in adult diapers and other sanitary supplies. Staff members would use whatever Dad stocked for her for their other residents as it was just easier to grab those and other family members were not as conscientious about keeping supplies on hand.
Sometimes items disappear with no malice. She did also lose her fair share of clothing - probably some through theft and others from being so soiled it was easier to toss.
K