AJ Lee obviously looks about 13 years older than 13. Some guys just don't find her attractive for whatever reason so they nitpick and then exaggerate. They're just trying to get a rise out of you (and succeeding), if you know you're not a pedophile then gravy. Stop taking shit to heart.
Anyway, in regards to the thread title, I came up with an angle where AJ goes on crazy reign of terror over the DD before she feuds with Paige. The feud ends with a match stipulation where if AJ loses her title, she must commit her crazy ass to a psych ward or something. She loses. Gets a much needed break and comes back (at some point) with a "two-face" gimmick. On Smackdown, she is seemingly, a totally fine, mentally stable, AJ Lee. Back to the way she was with Daniel Bryan. Peppy and bouncy and cookie cutter. But on Raw, she basically becomes the WWE'S version of Harley Quinn. Like I said, she's a crazy character who bounces back and forth between normal and off her rocker.
The Pigtails would be perfect for that. I also just had a thought that her and Dean Ambrose could have a really interesting Harley-Joker type thing going on at some point.
I mean, anything to get AJ into that outfit.