This is so familiar. We bought our shepherd a beautiful plush dog bed and our cat at the time, Neely, did the same exact thing as Louie. I guess our cats enjoy doggie comfort too.
They do BUT the cats could choose from the sofa, recliner, our bed, the glider with fleece throw, or either of the smaller cushy pet beds (one of which is brand new). Becca has only this nice bed and Louie claims it? Hmmph!
Cats can’t resist a fluffy soft new bed and I have found they actually prefer a large one to a small cozy one. No dog at my house but the cat does have a dog bed. If you want to change her sleeping preference to a different spot, lay a large piece of fleece or fake fur in it.