Some great strategies here. I take it pretty simple with argumentative women because I like to have clear decision points on what I do. I've found that this only really comes out when they feel "safe" to argue with you but loses attraction for you and starts to test. I give them a little leeway with it and listen, some here have said no more than 20-30 seconds and I think that's a good rule. If she's not upset at me and its something else in her life I'll sit on the floor and listen to her tearful pity party. If she is being unreasonable I will be playful a bit and tell her she is cute when she's angry or make little jokes about it's all over so guess I'l have to dig my little black book out of the closet. Anything that should normally make her laugh and see how ridiculous she's being. If that doesn't work, I'll sing Jimmy Crack Corn and go play some video games or something. The end result you want from this is for them to be able to diffuse their dysfunctional argument techniques because you will not engage in toxic behavior because its either that or you are gone. BPD women will just up the ante and accuse you of laughing at them or get actually violent, but then you have your answer. Look up Gottman's Four horsemen. These are the 3 toxic forms of argument that eventually lead to the ultimate and most destructive form: contempt. The three are criticism, defensiveness, and stonewalling. This is where I differ from the soft-nex guys, I don't stonewall, I just go about my business like its nothing and leave if I have to or if she won't leave me be. Once contempt becomes the game, you need to play some hard ball and be willing to leave and never look back. Do not engage in toxicity, just show her that you will not put up with it and make her look ridiculous. This works perfect because it gives her only 2 choices rather than none that soft-nexting does. You need to also pay attention after this. Some women will start to attempt jealousy games or flirt with other guys in the coming days and not make up with you. If she is putting you on a lower level, then go no contact and force her to make an attempt to actually physically come to you to make it right out of respect for you. It really means you are not able to give your best love and that is how they devalue you. No phone, text or online anything. Make it hard for her to reach you. ALWAYS have a place you can go, a friend's house, a cabin in the woods, a bed at work or anything.