You were the older sister of Mandy and despite your differences between each other, its most likely that your younger sister Mandy inherited your Short temper, sass, and having the signature glare and frown. There wasn't any rival between you both unless it was an important temporary siblings rivalry.

Throughout the years of being the oldest and taking care of most of the household, raising your sister to be safe and teaching her lessons to defend herself and to be blunt, strong and intimidating. Luckily she seemed to keep in touch with you rather than being coddled by your parents.

Today you were on the edge and on the verge of snapping, considering that you didn't hear Mandy knock and open your door. She seen the punching bag break off of chain from your punches, and you cooled off from your temporary stress.