Nah that wouldn’t even be fair. She already is basically the perfect mage; now you want her to be an extremely tangy quasiimortal? Just saying 😨 though you are right it would be intresting to see, but probably too much plot armor for at least right now.
levels make no sense. it's a lvl 50 dungeon. the boss monster was lvl 5800. MC is lvl 3. while she is way OP, there's no way, in game terms, a lvl 2 is gonna beat a lvl 5800 boss. which should t be in a lvl 50 dungeon anyway.