Yes, when she starts crying, you are supposed to count to 5 and go back in, lay her down, say in a nice soothing voice, shhh, it's okay, it's time to go to sleep - or something like that - then walk out and do it over and over and over. And you still walk out of the room even if she's still crying.
Sometimes, if my son is laying down already, I don't go all the way in the room, I just stick my head in the door and shush him. And sometimes when he's really hysterical (like he was this afternoon when we did WI/WO) I'll try and calm him down a little bit by staying in the room longer and sometimes I give him a quick little hug before I lay him down. Sometimes I wait a little longer than 5 seconds too, but mostly I try and stick to 5.
For naptime today it took almost an hour and a half before he fell asleep ( he was very mad, and overtired), and he actually finally gave up and fell asleep while I was taking a 5 minute break from going in his room because I was frustrated and half contemplating putting him in the car and taking him for a short drive. Now he's taking a really long nap because he was extremely tired and I'm going to have to wake him.
I don't know how long it's going to take us to ween him from the props we've been using, but he has slept thru the night every night since we started this, yesterday was a breeze, and I'm sure that eventually he'll stop needing me in the room entirely.
Good luck! Let us know how it goes.
Debbie