R.
K.,
Put your daughter back in her bed every night. Comfort her, tell her you love her, then put her in her bed. You might have to do this several times before she gets the idea/message that she is to stay in her room.
I did allow my children to sleep with me, it does cause problems,(it also builds a wonderful bond and that is why you child will not hate you or stay upset when you make her stay in her room)
She is old enough to be there, it will take complete follow through on your part and you might lose a few hours of sleep the first few times, but in the long run it will be worth it. You need to think about your marriage and the benefits to your child when you and your husband are happy.
That is all part of being a parent as well.....
goodluck.