Lost soft blue comforter with small white polka dots near the picnic area by Lake Erie in Ashtabula.

I lost my soft blue comforter in the Ashtabula area last week. I believe I left it at the picnic area near Lake Erie where I was sitting with friends. It's really dear to me because it was a gift from my grandmother. It has a few small white polka dots and is very warm and fluffy. If anyone has seen it, I would be so grateful to have it back!