K.D.
Sounds like she's ready. Probably better, too, so she doesn't feel the baby took her bed. We just switched and believe it or not, our son if very proud of his bed. He'll even put himself to bed now (21. mos.). Something I never expected. Make it a special thing for such a big girl, and she should buy it. We have our son in a bunk bed on the bottom so we he is very low to the ground, but he feels like he's big man on campus! GL!