UPS does insure everything but the porblem is the shipper has to file the claim and is the one who actually gets the payment for the insurance. Years ago I sold glassware on ebay and some arrived broken. I had to file the claim and turn in the cost of each piece. They paid me and I had to pay the received. she still had the dishes but got paid for the broken ones. They even sent the adjuster to her house but I am the one who had to handle the transaction.
Hope you find your quilt.