I'm assuming that your daughter is two or three years old - old enough to understand some language. If the baby is only a month or two old, I wouldn't change anything right now. However, when the baby is no longer so "new" to your daughter - say, when the baby is 5 or 6 months old - I think you could just tell your daughter that the bed is too squishy now and that you want her to sleep in her own bed on the floor near you. Just get her a small mattress that can fit under your bed in the daytime and pull it out at night. Your daughter can spend the whole night there near to everyone or she can sleep in her own room and just join you when she wants to in the middle of the night. If she climbs into your bed, wait till she falls back asleep and then gently roll her onto her own little bed. This is usually satisfactory to small children. By the time they are five years old most kids are ready to enjoy their own rooms and their own beds the whole night long, even if they have been in the family bed(room) till then.    Sarah Chana

I have the same problem and I'm glad to know I'm not the only one experiencing this!  It sometimes gets a little embarrassing admitting that my 3 yr old is still in my bed.  Lately we've been trying to take her back to her bed when she comes in middle of the night.  It's a little tiring but it keeps her in her bed all night and some nights she doesn't even come into our room at all.