C.P.
Hello E.,
I recommend you move her to her new room way before the baby arrives so she doesn't see it as her being displaced. that way if every so often she still wants to be in the crib... she still can. Also get a baby monitor for her room. do all the fanfare you can to get her all excited about her new bedroom. find stickers of her favorite characters, etc. That's what we did w/ my son. However, he got lonely and when my daughter was about 2 months old we moved her crib upstairs so he wouldn't feel lonely. make sure there's enough light on the stairs so if she wakes up in the middle of the night she can go downstairs safely. good luck and congratulations!