Is it wrong to give my boss an ultimatum over him rehiring an employee?

BlackUrsidae
We have an employee who is super problematic. She pretty much has sexually harassed every guy that works here, she has a short temper, has no respect for authority and doesn't do work. She's literally sexually ASSAULTED me so I hate her. She's going to put in her 2 weeks (for the 3rd time) but our area supervisor wants to hire her back AGAIN because we don't have enough people. I'm going to tell him though that I can't stand working with her and tell him all the things she's done to me and that if he rehires her I'm going to quit. I doubt he'd want to pick her over me as I'm the best employee in regards to my division. Is that immoral?
Is it wrong to give my boss an ultimatum over him rehiring an employee?
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