Female Weezy is an alter ego of Nicki Minaj.. She is the female version of Lil Wayne, has blonde hair (just like other of her alter egos), and her personality is careless like Wayne but she is also less funny and more tough. 
In the begining of "Y.U. Mad" she says "I am the Female Weezy" and at the end of "Stupid Hoe". The line was directly taken from "Y.U. Mad".