^while that's explicitly the case for Tesla I'm not so sure about Einstein. IIRC some bits of backstory mentioned in the storyline she's heavily implied to be one of the original Anti-Entropy leaders (so actually really old by the time of the game) and quite possibly the Albert Einstein of this worldline.
Not like the Stigmatas didn't imply rampant genderflipping of major historical personages (and some rather more legendary ones) in the setting anyway.