Honestly, I didn't notice it until you pointed it out. It's much more obvious in this second picture below. That is really strange. False eyelashes/Heavy mascara? Alien Zombie Biker Mama? It's weird.
Dunno. I guessed that she’s wearing black scleral contacts. Either RX for vision correction and glare reduction, or movie prop contacts.
Or she simply could be possessed.
Which would explain why Slow Joe gravitated towards her...