I work part time for a small family owned company. I don’t contribute much to my family’s finances, it was just a job to get me out of the house. The owners, husband and wife, are in their 60s. Their son, who is VP, is 40. The son is pursuing an affair with my coworker, I’ll refer to her as “Becky.” VP and Becky are both married with small children. VP and Becky are having an emotional affair (FaceTiming and snap chatting at night while their spouses sleep) and Becky has told me that they’ve made out at work at twice. Becky and I were on friendly terms so she vented to me about it. I hate it, but I just try to overlook it and mind my own business. Becky is very emotionally immature and has been throwing fits at work. She will say that she is not appreciated and is quitting and stomp off to her car. VP follows her to her car and they sit for hours while he convinces her to stay. The owners were extremely unhappy with this stunt, but VP defended her and there were no consequences. I suspect VP may also be worried Becky will expose the affair if he crosses her, but she’d be throwing a grenade at both of their marriages. She has begun giving me problems. She overreacted about a small mistake I made, was corrected within 20 minutes of realizing it. My supervisor even told me that it is not a big deal and she is blowing it out of proportion and he has my back. I am out of patience with this environment and her unchecked behavior, and feel that I am close to losing my temper, which is not a way I ever carry myself at work. I just need to get the heck out at this point. Do I bother mentioning this to my supervisor when I turn in my resignation letter? I’ve been thinking that I should just say ‘I want to spend more time with my kids’ to avoid any more drama. Secondly, do I tell her I’ve run out of patience for her and tell her to give me space, or try to avoid her? I might end up snapping. I feel in my gut that the path of least resistance is best for me and my inner peace. Part of me also wants my supervisor to understand why I’m quitting. Maybe being understood isn’t worth the trouble in this situation.
TL;DR Should I tell my supervisor that I’m quitting because the VP’s affair partner (which no one else knows about) is making the environment unbearable, or leave as quietly as possible?