I've had my bunny for about 3.5 weeks now. She is doing well and had basically stopped marking everywhere except for the couch. I try to keep my eye on her but if I walk into the other room for a second she jumps up on the couch and leaves many little cocoa puffs. Why does she keep doing it on the couch and nowhere else? It's gross and I have a nice couch so I want her to stop. Any suggestions?

I would like her to be able to sit on the couch with us but I get nervous every time she is on there so I tell her to get down everytiem she jumps up.