Bedding, twin XL, but would full size blankets/quilts be too big? Thinking long term

DD got a duvet cover with a coordinating coverlet, the duvet cover was mainly white and has been replaced several times, the coverlet lives on and is well loved. They were both queen sized when we bought them for her dorm bed, in 1999. It was only Company Store, so not super pricey, but she loved that coverlet and still has it. I also still have the Company Store cotton blanket we got her (queen, but it shrank) at the same time.