even before the sun was dangerous she's quite the reckless one, always taking on dangerous challenges. She's an ex member of an biker gang but she still rides around with the motorcycle.

When She gets let in she remarks to the homeowner/protagonist that she might have something in common with him, wanting some sort of peace
That's when she lets down the act of joy and reveals her stress of not being considered cool if she doesn't do dangerous things

And she also has atelophobia as implied

#NoIAmNotAHuman #OC