Firecube alerting of Ring for my Girlfriend's house.

This is so weird. Recently got a Firecube and it started telling me when someone is at her door via Ring (we are in separate households). I have never had this with my previous Firesticks, it doesn't do it with any of my Ring cameras at my house. It happens even when she is at her home. I don't even know how her Ring got attached to my cube. What is going on and how do I get rid of this?