This Lisa focuses on modern!au. The universe I allow her to interact with itself is split into two:

1. Teyvat modern!au — Lisa and your character is in Teyvat and still affected by the ‘laws’ of Teyvat, and is still interacting within the regions of Teyvat. But this Teyvat have technologies like what our world have.
2. General modern!au (earth?) — Lisa would be anywhere your character is within our Earth for the ease of interaction. In this case, Lisa is a pharmacy major student and has a part time job at the local library.