Ideas for Umbrella Academy fanfiction?

Spoiler alert!

I'm currently writing a fan fiction for the Umbrella Academy, which is very much based on the Netflix series, but the main character is made up by me. She traveled through time with Five, Five got stuck in the Apocalypse, she was nine days before that, so she's 13. I would then let her come out two years before five in the part where season two starts, so that she then in 1963 is already 15. Now my question: should she then have a relationship and if so, should I just invent a boy from the 60s?

Possibly