Was this just Kaylee taking normal precautions as one should, or was she scared and perhaps more hyper-aware of her surroundings for a reason. It reminds me of that saying "just because you're paranoid doesn't mean they aren't after you" imvho
From an interview with her parents:
The police have said that this was a targeted killing. Madison and Xana were coworkers at a restaurant, I believe. Could both of them have been targeted by another disgruntled coworker or repeat customer who had gotten to know them? Ethan was collateral damage as he had stayed in Xana's room...
www.websleuths.com
Dad - My daughter was aware of an environment.
Mom - Very aware.
Dad - She'd turn her camera on. She would film when she thought somebody was following her out of a mall parking lot or a grocery store. She was very aware that, she was a pretty girl, and that could attract some problems. So, she was alert. She was a streetwise child.
Mom - She herself was a web sleuth. Literally through and through which is just so ironic and just so surreal and all of it, you know? Just very sad for families when she'd hear about this type of stuff happening, like, 'Mom, did you hear bout that or mom, did you hear about that? She was very well of her surroundings, very well. I mean, she would think somebody was following her and she would call me, 'Mom, I think there's somebody following me', and I'm like 'well, Kaylee, call the police', then she'd say 'oh never mind, they just turned into 711'. I mean, she was aware, very aware and she locked her doors at night and she locked her car.