Their mom

A few people have been asking me who is Nat, Rim and the other's mom. Well here is her backround story. She is the twin (obviously shorter) sister of the tallest. Like her brothers she is a shady and dishonest character who was sent to Earth to seduce Zim into getting him in trouble, but winds up falling in love with him. Lame I know, but I've experimented with this character for a couple of years now (but have never been able to come up with a good name for her). Any ideas for a name are welcome.