Time and Again

Kara had just started as Supergirl when a portal opened up in her living room dropping a woman who claimed to also be Kara Zor-El from a doomed timeline. How will National City handle a second Kryptonian?

Inspired by The Shape of Things to Come. I wanted to try a time travel story that dealt with a time remnant rather than straight up starting from the beginning. Anyway, I suck at beginnings, so hopefully y'all will give me some slack until I get my feet under me in terms of where I wanna go with this.