My 2.5 year old DD has always been a great sleeper. About 9 months ago we transitioned her to a big girl bed as we had #2 needing a crib. Things went well with her getting out of the bed a few times but after we put her straight back in the problem went away. Up until a few weeks ago. Now she gets up about 20 times when we first put her down. There are no tears when we put her back but a few minutes later she is back up. She comes and gets us with a big smile on her face. Initially we would just put her straight back into bed but that did not seem to work. Then we tried ignoring her and waiting a few minutes to put her back in. That is not working. ANY suggestions would be very appreciated.

) and then when they settled down after a half hour or so, we would unlock the door.