She may be part of a team, and they may share accounts. Someone else in the group may have posted to her account(s).
Id consider it a false flag attempt foiled, or perhaps an assassination attempt foiled.
I give up. I need sleep.
Here’s a Twitter account that suspected something was wrong with Kate’s Twitter followers. Follow the thread with this tweet.
https://twitter.com/dhobe13/status/1025090322836201475?s=19