Growing too fast!!!!!!!!

This past week my lil Ava turned 5 months old. Not only did she decide to sit up on her own, but she is now crawling (and all of this ocurred within a 48 hour period)!!! I am SO PROUD of her, but I am also wondering where my little girl went???!!! This is not supposed to happen so fast and it makes me sad:( On the other hand, Katy now has a playmate and they really can interact together on another level which is very cool to watch!!