Physical contact, conflict with a FAM and other crew members, then reassigned to F (?), people who might argue that one of the perks of the fares they pay for is to not have surly, let alone psycho, crew.

I'm amazed they let her on the flight back. Perhaps AA made the decision that even if they had to throw a token voucher to pax who followed up, it was still cheaper than a possible delay because they had to find a replacement. She must be pretty senior.