I think that the whole "counting to 45 in Spanish" was thrown in there for show...you know, Casey is "mother of the year".
I don't think a kid being able to count to 45 in ANY Language is an identifying/vital characteristic, anyway!!!
I'm not saying it's impossible, there are kids who do incredible things. My issue is that, in the videos, Caylee isn't all that clear in her speaking in the first place. Secondly, the perp obviously wasn't engaged and attentive (more worried about boys, Bud Light, and finding someone to take Caylee off her hands), and that's what it takes for your child to excel, especially at such a young age. JMO, of course.