I mean they aren't besties, but she's at least somewhat familiar with Yuko to a fair extent. That said I won't pretend to know how well or the circumstances at all, just throwing out omissioned guesses based on people who have some level of familiarity. She's at least collabed once with Yuko which is more than anyone not named Kirsche, Sleepy, or in Phase opposed to pure twitter interaction. Plus Pippa never seems much open about DM stuff. (And also constantly forgets them too.)
And if only a mod was behind it, that just makes me lean more towards they wanted to avoid any company shit stirring. Janny probably wanted to avoid having to clean up lol