Lacertilia "Tillia"

She bruises, coughs, she splutters pistol shots
Hold her down with soggy clothes and breezeblocks
She's morphine, queen of my vaccine
My love, my love, love, love, la, la, la

Tillia has a very hard time expressing emotion with her facial expressions. She often has a pokerface / deadpanned face at all times, and it is very rare to see her smile or frown.
She's very emotional, but not expressive whatsoever. 
Often, others think she only gets upset at random, when in reality she would be upset for a long while.  They find her very hard to read.