Role in the film
Charlotte is less than happy about having Michael's son, Mimi-Siku, in their apartment, as she is a very conceited New Yorker who believes her way is the best. She openly pleads with Michael saying she can't watch Mimi and he assures her saying it'll be easy, that Mimi's a man, that he can look after himself, and when he comes back home they can make out, which she likes.
Charlotte is sleeping practically almost naked when Mimi creeps into her bed and looks at her crotch. She smiles, thinking it's Michael, but then wakes up and screams upon seeing Mimi. He says she has a nice "puchi-puchi" (vagina) and she starts hitting him says, "That's the last puchi-puchi" you'll see around here, you little savage!"
To add to Charlotte's displeasure, Mimi spies on her in the shower and sets off his pet tarantula, Maitika, into the stall. It scares her, she tries to kill it, and it tries to break in through the door.
Charlotte isn't seen again afterward; at least until the end when Michael dumps her and says he's going back to his first wife, Patricia. It can be assumed these two combined accidents triggered like a collision.