Sim won't stay in bed to sleep or nap.

My sim won't stay in bed to nap or sleep. She climbs in, stays for a few seconds, then climbs back out. Even if I stack the sleep/nap options, they all fall together and she stays in bed for the same exact seconds, instead of climbing out and back in to try and stack the seconds.

She can nap on a couch just fine, but it isn't the best to get her energy up and I don't want to use the energy potion from the traits store over and over again.

It had only happened every now and again, and sometimes exiting to world edit would help, but now it's constant and nothing is helping. Does anyone know why it's happening or how to fix it, without mods?

Her two daughters sleep just fine, she's the only stubborn one who won't.