[@Tenma Tendo]Monica cast a curse that hits the physical body. Your CON is likely trash. Unlike Anderson who's spent his whole life training physically for combat your character has no recourse against the spell. If she cast a curse like Gandr that physically appears to hurt you this spell was activated as a direct attack on the body. In other words she hit you with a non-physical attack on your body not unlike the torture curse in Harry Potter. If Monica cursed it on Anderson he'd power through it, and murder her. 

Likewise Berserker doesn't have instinct, and doesn't have a ability like Mind's Eye. Assassin speed blitzed. That's her whole deal. Her physical powers are trash. 

On another note I am GM, and thus am in control of the story. Monica is an NPC. If I attacked with Leon one could make an argument that I'm playing favorites. But I'm not I'm using a bot who you stood up to on your own volition not knowing her strengths, and weaknesses. Monica uses curses non-standard magic. It's not flames, or water, or even air its pure magical attacks that are specifically made to debuff, or continuously harm an opponent. This is a field she has been trained in since she first arrived in the college, and has grown to have an over specialization in.