By the time she is twelve, Marie gets used to the jokes about the irony of her name. It's all in good fun, she knows that, and it's not really hurtful, per se, but it is annoying. The delightful coincidence of her name and her weapon form is just too good for people to let it pass without a mention. She's pretty much accepted that it's par for the course when meeting new people, and it gets old.
"Mjolnir, eh? Like from Norse mythology?"
"Are you too heavy to lift like in the comics?"
"I suppose it's only to be expected in someone from… where are you from, anyway?"
It gets very old.
When she and Rei move from NOT to EAT, it's pretty much another week of the same thing. A new class full of their fellow soldiers, new faces all asking variations of the same question.
But there's one boy, a spindly kid with arresting eyes hidden beneath thick, shaggy fringe. He's the class oddball (paired, ironically, with the class prince) and when she introduces herself during a team exercise, he doesn't even blink at her name. Instead, he says, "Professor Tizona says you're unusually good at amplifying your partner's wavelength. I'd like very much to experiment with the limits of the magnification."
His name, it turns out, is Franken Stein. Marie decides right then and there that she's in love.