The first couple of days, when we decided to lock her out of our bedroom, you could tell she was a bit peeved and confused. But luckily, I had my Mom staying with us, so Yoko just warmed up to her during that time instead.
Then after testing the waters a bit with a slow introduction of the baby, it only took a short time for her to act like she didn't even notice he was there. To the point of wanting to come up on my lap and almost walking right across his face.
When we realized that there was going to be no issues (other than a bit of jealousy and demand for attention from us), we allowed her to come back into the bedroom again. The baby sleeps in a bassinette, and knowing that she wouldn't be interested in going in there to harm the baby, she was welcome to sleep with us again.