If I remember correctly, there's actually a medical condition that I'm trying to recall the name of, which causes people's eyes to look like that even when they're just doing normal things. In her case, It's probably just psychopathy.
Cult leader Charles Manson has sanpaku above his eyes, and I think that it's safe to say that he does not exhibit the best self-control. (Although I suppose that it take incredible self-control to carve a swastika into your forehead.)
She’s definitely not playing with a full deck.
If I remember correctly, there's actually a medical condition that I'm trying to recall the name of, which causes people's eyes to look like that even when they're just doing normal things. In her case, It's probably just psychopathy.
I believe the condition you're looking for is 'sanpaku'.
Check out the pic of Charles Manson in this one: https://www.tofugu.com/japan/sanpaku/
A couple bottles short of a six pack where I'm from.