I am entirely down with that, and given Marian is from 7-8 years of Milliways and 1 year of TF, and utterly canon/mythos broken, she's actually really well versed in people knowing absolutely everything about her world (and absolutely nothing about her actual life). She's actually pretty gracefully chill about the whole thing. Peggy Carter's her new roommate, and she's just been doing a little bit of it, too.