Jumping on the Bed

I have a hard time keeping my bed made.  Ciera loves to climb up onto it and then crawl under the covers or hide in the pillows.  She also loves to squeeze between the pillows so they completely surround her.  Recently she has decided that jumping on the bed is the greatest fun.  That is until I take her off and out of my room and tell her, "No jumping on the bed."  Camden then also gets mad at me for not letting Ciera have fun.  He told me he would protect her so that she doesn't get hurt.  I told him the best way to protect her is not to let her jump on the bed.