I wouldn't say she wanted to literally kill lil Jammin in any way for flirting with the MC and all the inappropriate sexual innuendos she made, but she really is jealous asf of other women she suspects are interested in the MC or he in them, which is ridiculous, cuz a smart, attractive woman like her could score herself another, better, or even richer man whenever she wanted to, but reasons. And Jasmine only playfully teased her and played on her jealousy a few times as some sort of favor to the MC to spice up their boring sex life. Her words.
I still think a 3some or more, assuming Jaz and Veronica can put their lil differences aside, would do a better job at that, cuz the only thing that's better than pussy is more pussy.