Answer by Holly Jahangiri:
Our mothers are our first, strongest female role models. I imagine women raised by their grandmothers would "become their grandmothers" or women raised by she-wolves might "become she-wolves." It means that despite the very normal phase of teenage rebellion and nascent independence, wherein we distance ourselves quite purposely from such role models, we're unlikely to escape them – and may even come (more often than not) to appreciate their better qualities, and stop trying to fight their influence, eventually "becoming" them. That this sometimes includes their flaws and foibles is also unavoidable without concerted effort; those early, formative years leave lasting impressions on our developing brains and habits.