The contract tracing apps were installed via an operating system update and cannot be removed. You should be able to turn it off though.
https://duckduckgo.com/?q=iphone+turn+off+contact+tracing
Lots of how to articles it appears.
But they don’t tell you the name of the person. They only tell you, you were exposed and what to do next.
I have a feeling someone is spoofing her friends via Facebook. Someone in her circle of contacts on social media is pranking her.