Not long ago, a chaste and respectable lady in this forum employed this style of argument to great effect. Before long, she had managed to turn nearly everyone against her. You may wonder why you were singled out, but she needed a target to ignite a war of words. Frustrated and seething with anger, she sought confrontation as an outlet for her resentment.
However, even Trump understands that before launching air strikes against Tehran, one must first accuse Iran of pursuing nuclear weapons. In much the same way, she accused you of being someone you were not, then layered that assumption with even more venomous allegations. As you struggled to defend yourself, you overlooked a crucial point: she had never proven her original claim about your identity in the first place. The victim’s greatest mistake was failing to realize that she was never truly concerned with whether you were actually the person she claimed you to be. Your presumed identity was merely a pretext for launching her baseless allegations; her objective was never the truth, but the conflict itself—a war of words that gave her an outlet to discharge her spent ammunition, in this case a barrage of Hokkien expletives.
As she kept you occupied defending her baseless accusations, the question of your presumed identity—one you were not—was gradually pushed aside. In the process, your attempts to counterattack ended up reinforcing the appearance that her accusations had merit, even though they were never substantiated to begin with.

Keep your focus.