Who is Mancie from The Complete Maus and what is their importance?

Mancie is a Hungarian woman who is interned in Auschwitz-Birkenau. Little biographical information is given about her though her role in Anja's survival is an apparently critical one. Mancie is young, strong, beautiful, tall, clever, and blonde. In the concentration camp she somehow takes a lover from among the Nazi guards—Vladek refers to him as "an S.S. man" (p. 212). This allows Mancie to receive preferential treatment and better food.

Mancie apparently befriends Anja after learning that Anja's husband has also survived—Mancie finds the idea of true love within the Holocaust irresistible and takes personal risks to allow Anja and Vladek to periodically converse and to send each other small items of care and occasional letters. After the war Vladek and Anja make several attempts to contact Mancie or learn about her but are never able to discover any additional facts.