@Erica6
I would suggest blocking the obnoxious guest.
It is usually better to communicate with Airbnb using online chat.
It is even better to avoid communicating with them altogether.
If the guest is “late,” does that mean she never checked in? If that’s the case, forget about it, and Airbnb will sort it out eventually.
If she does show up don’t let her in. She can complain to Airbnb and then they can contact you.