History
Marilyn Hannah had a relatively happy childhood as despite suffering from bullying from her peers, she was very close to her mother. When her mother died, she suffered immensely before she was found by Charles Xavier who offered her a place amongst the staff at the Xavier Academy.
She became a much loved member of the Institute and ran the school cafeteria, before she was brutally murdered by Black Tom Cassidy after trying to defend the children with a frying pan.
Powers
Marilyn has four arms which presumably is a big advantage in the kitchen.