Comfortable bed

I will accompany my youngest girl to sleep during night time. My practice is after she falls asleep, I will go back to my own bed. My problem is sometimes she will cry in midnight and I have to go to her to soothe her. Most of the time after I managed to stop her from crying, I will not go back to my own bed but sleep with her instead. She sleeps on a queen size bed by the way. Well, if I sleep on her bed, then I will feel backache the next morning. Probably because I still not use to sleep at her bed. How nice if I have adjustable beds to do the massaging job for my backache. I also can sleep on it since it is so comfortable.