too big too fast

Rory is getting too big too fast. We had to lower her crib already because as you can see she has already pulled herself to standing in it. I came in one day as she was waking up from nap and found her standing and looking over the edge and quickly grabbed her before she trying jumping overboard. Needless to say that we lowered it that night before she could nap in it again.... I feel like it is too early! She is learning too much from her big sister :)