ForgeCoffee
Very strong + Vast magical knowledge + Vast knowledge of spells = Archmage. Why would she be called Angel something anyways? I mean if she shows off her wings and halo and stuff then I guess it would make some sense but meh. Thomas I believe gets called The Goliath because of his physical power being above every other hunter until Sung Jinwoo beats him up. So Kara getting the title of The Archmage or some other mage or magic related title because of her immense power, knowledge and stuff would be very fitting in my opinion.