plays10s

Hi - I made a quilt for my daughter-in-law. It was supposed to be a "quilt", but she liked it so much that she has used it for a couple of years as her comforter. She thinks the white sashings could stand to be whitened. She has washed this quilt several times. She wants to know can she Safely use the Ritz Whitener and Brightener or the Ritz White Wash. I'm thinking not the White Wash. Also, she has always washed this in cold water with regular detergent. When you use the Ritz, you are supposed to use hot water. Also, there is Quilters Dream wool inside as batting. Any suggestions?

I hope someone can help me. Thanks!