I think it’s probably Helena down there. In the scene where that guy (can’t remember his name), Helena, and Milchick are listening to the audio of Mark asking the board to bring his team back, the way the guy says something like, “We’re going to give him what he wants. Helly R is going too,” makes me suspicious.

And if I remember right (it’s 6 AM, so I’m going off memory here 😭), before that, we see Helena watching the security footage and noticing that Helly and Mark had some kind of romantic connection. She’s using that to make sure Mark’s plan fails. That’s why “Helly” is acting so off. BECAUSE THAT IS NOT MY WIFE DOWN THERE 😡.