Sounds like a blanket party is in order. It was usually a great motivator in the military but needs to be used sparingly. First you gather a few choice hard objects that fit snugly into the end of a sock, place the items into the sock and stash the sock under your pillow. Then you wait until she goes to sleep. After she is soundly asleep you quietly get up, wrap her blanket around her snugly so she can't escape being extremely careful to cover her eyes so she can't see who is doing it and her mouth to muffle any sounds then proceed to beat the living shit out of her with the sock stuffed with hard objects until she becomes unconsious then quietly go back to bed.
When you both awake in the morning she will have a completely different attitude.
