Bad Bonk Noise

Chloe climbs everything. So when I put her down for her nap and about 15 minutes later I heard a loud bonk...I wasn't completely surprised to see her laying on the floor outside of her crib. Yikes.
I cant believe she climbed out of that thing. I have this baby carriage that was next to the crib so I think she must of put her foot through the slats and stepped on the carriage and the somehow pushed herself over.
Luckily she wasn't too hurt..that I can see that is.
Great...I hope it was the baby carriage because I have no idea what I am going to do if she can climb out of it without help!