Lol. My parents were divorced so my brother and I flew a lot for court ordered visitations with our dad. The only good thing about the whole thing was that he would buy us fireworks in massive amounts that we would take back to NJ with us. I can't even imagine how much trouble we would be in now days. Our checked baggage was full of fireworks and one of my friends had tossed a bunch of packs of cigarettes in mine. We always had knives in our checked bags along with slingshots and ninja stars and probably a crap ton of other things I'm forgetting. We never got in trouble but it was the 80s and early 90s so I don't think they looked at checked baggage at all.
I did always make sure to have spare batteries for my walkman because God forbid I couldn't get it to play at the x-ray machine... Like a 10 yo in her Sunday best is gonna hijack a plane. I guess airport security was always dumb.
This lady was a moron for putting it in her carry on stuff unless she was stirring stuff up so the moronic TSA would all be oohing and aahing over her fun stuff while other people wandered through with even better stuff.