Thanks, I think we'll wait another month or so and see how it goes. She sleeps much better than our son. Our son will wake at the sound of a pin drop, it's annoying!
I have my girls sharing the room, but since my baby is only a month old I sleep her in a bassinet in my room. I don't seem to have that problem. My daughter was the one with the idea of sharing rooms with the baby. She's also a very good sleeper so nothing wakes her up. I think like alaysha said maybe putting quiet music can mask the sound. Try different things to keep him from waking up.
I'd keep her in the living room until she is sleeping better. Maybe try playing quiet music in his room while he's sleeping to mask the sound of her waking up. I really don't know hun that's tough.