She may sleep better in her own room, i agree.
You should also remember that some babies need to cry a bit before sleeping - ds always does (unless he's absolutely knackered). If you don't want to do controlled crying a la GF then don't, but there is a big difference between that and "letting them settle" if you see what I mean.
In case you're interested, I did a leaving to cry thing with ds. The first time I went in, settled him, then went in every 10 mins for 30 mins. Noticed he became hysterical whenever I went in to him, so the next time I just left him - he cried 15 mins and has slept through the night almost every night since! I don't care what the psychologists say - he is happier and less nervous now than he was. He used to cry in my arms anyway.