I would like to think I would be able to keep professional and do my job.
Which would work just fine as long as she and her cohorts acted like human beings.
What I'm afraid would happen is something would be said that would make me go off like a dromedary in a porcelain manufacturing facility.
If she came in holding a sign that said, "G*d hates TMs" I'd automatically assume. "Uh oh, it's somebody from corporate, I better be on my best behavior & turn on the Vibe!"