Clara also said she was working on something. A portal experiment. If that's the case, she might have had access to some sort of portal at her lab.

The question is where. A lot of things seemed to be stored in the Invincible right now, though at this point I imagine more of us will need to stay there.

Was the store itself damaged? That's a central location, if it survived the flood we could restock it with what we have until we secure a way to find more.