He's working with a sex-mad slapper

JOB JINX: He says they are just work colleagues but she knows the woman has bad form

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take off for days and I have absolutely no idea where they are - or what they’re doing.

She's someone he's known for a while. They used to work together at another company.

She's always had a terrible reputation as a game player and home wrecker. She had several affairs with married men and seemed to take pleasure in breaking up marriages.

Do I have any power in the face off this scary individual?