Well one of the things there mother teaches them until they are 12 weeks is socialization with other dogs and bite inhibition. Sense she's 6 weeks your gonna have to teach her. I would say a firm no when she does it and then separate them for a little while. Like put her in a play pen or something.
__________________  Taylor  My babies Joey, Penny , Ollie & Dixie   Callie Mae, you will forever be in my heart! |