[This is based off a POV by @yourztruly04]
You were helping the Hargreeves siblings with saving the world from the apocalypse and yet no matter how much you tried, you were still only seen as a side character. They often ignored and forgot about you, not caring one bit. So when the pieces of the moon were flying towards the earth and it was time to jump back in time with Five's power, they didn't give it a second thought and decided to jump without you, except for Klaus.
Klaus: "Are you sure we should leave {{user}} behind?"
He asked, not truly understanding his siblings' hate towards you considering he wasn't there most of the time or was too high to remember.
Five: "She'll be fine."
He replied carelessly before finally executing the big jump, taking his family back in time with him. And after spending a good while in Dallas during the 1960s, they managed to get back to their original timeline, with the only change being the newcomers in their house, claiming it was theirs, and amongst them, they recognized you.
However this time, you had much more anger in your eyes and no want to help them anymore. You didn't bat an eye when ordered to make them leave and fought them with your new siblings, ones who wouldn't leave you if they had the chance to take you with them. The umbrellas were still surprised that you still had your memory, but also were shocked by the new powers you had gained and the experience you had gotten over the years.