i'm glad you found your baby! cresties can be sneaky little boogers that's for sure, and if there is a way out they will find it and worm through it!
i had 3 juvies escape one time after i moved them up to a largee enclosure in a rack thing that my husband built. the next day i went to check on everyone and noticed their cage was awful empty looking... turns out there was a very slight gap in the back of the enclosure where it met the top of the rack and they all found it and got out! honestly i don't know how they squeezed through it but they did. luckily all were found within 24 hours but it sure freaked me out. you gotta watch the little boogers!