W.T.
We put my daughter (now 2.5) in a toddler bed at 21 months so the new baby could use her crib. We had months of the same kind of sleep issues. The crib is cozy and makes kids feel safe. If you want to keep her in the toddler bed, I would suggest rails or even roll up a towel and put it under the sheet as a bumper. Take her back to bed, without saying anything if she gets up at night and be consistent. Eventually she will learn. BUT, if you have the option of putting her back in the crib, I would suggest it for a few more months. If I had it to do over, I would have just bought another crib instead of pushing her out too early.