Fiancé

My fiance is as toxic as they come. At the slightest bit of an argument she threatens to leave/tells me to leave, but if I try to leave/or don’t try to stop her, she hits me with the “so you’re just gonna give up and let me go” she regularly degrades me when shes gets irritated/angry. And if im being honest, i do love this woman, she has a huge heart but idk what to do anymore im at my wits end. What advice could you guys offer?