This might sound like a step backwards if you've already made the move into the other room but I'll say it anyway in case it helps...
how about introducing a lovey to her whilst she still goes to sleep in your bed, so first she attaches to the lovey and then she moves to the other room?
I would probably just choose something for her (well, I would say that because I encouraged attachment to muslin squares for DS) and when she settles down for sleeping have it positioned so she is rubbing/holding it at the same time as your arm, and gradually move her hand to the lovey, it could be a bit back and forth to begin with with the aim of her holding the lovey rather than you when she nods off. You could then let her build the power of the lovey by bringing it with you during the day, if she has cuddles with you give her the lovey too, if she has a bump give her the lovey as well as the usual cuddles and sympathy etc.
Then she may feel more confident to move to the other room with her lovey?
Just a thought.