The Kropotkins were already married by the time of “Team Spirit”, and while this is a flashback, it’s a flashback to a time that’s still after the end of Bad Machinery. Lottie was 11 in “Team Spirit”; she’s 19 in the present-day strips, and 16 here.

Also, while the woman has some resemblance to Jana Kropotkin, in that “they came out of the same injection mold” way, her fiancé looks nothing at all like Sergei Kropotkin.