I don't think it was a big enough deviation to be considered out of bounds. She's supposed to be there since she's the madame of the Mariposa, she owns a gun and is authorized to use it during the heist (episode 1), and she's supposed to let them get away with the safe. The only variation in this loop to someone not closely monitoring her dialogue is that she went up with Hector instead of just telling the goons where the safe was at.
As for why the guest were monitored and not the heist, the heist is a known loop while the guests were flagged cause they were families heading into the main town which is supposed to be family friendly. Since Hector was ahead of schedule thanks to the MiB busting him out early, those families could be walking into something they didn't want their kids to see so the call was made to speed up the clean up of the heist for the families. The only reason the heist in episode 1 was monitored was cause it was an extra bloody heist to cover up the hotfix maintenance they were performing on the large number of hosts. And the only reason Maeve was specifically monitored before was cause her client numbers had been in a decline, not because she was acting loony like Abernathy or the milk man. Once her client numbers improved they would have stopped monitoring her interactions.
No idea, my only guess is panic at having her wake up and grab the scalpel.