Maybe it’s a little of both?But who knows really? It’s probably more that it’s Corey’s band than anything.
If you couldn’t already tell, she hates her brother with a passion.
[☄] — Oh, okay. That makes a ton of sense.

Honestly, I didn’t know they were blood-related until just now, but really…that makes so much sense now.
[☄] — Maybe she just doesn’t have a reason. Maybe she’s just fueled by her dumb hatred.
Actually, they’re both adopted, so I’m still not totally sure why she hates him so much?