Are you married?
She’s straight up emotionally cheating. Did you even read the thread? See here:
She’s literally flirting with other men AKA commiting zina of the tongue. She didn’t just have a friendly conversation (which she isn’t halal). This is cheating and will lead to full on zina. If my SO did the same then I’d divorce her instantly.
that’s not the definition of zina. Flirting is not a zina, it’s not good but under Islam it does not fall under zina. Also you need several witnesses for something to be classified as zina. OP has yet to clarify so far exactly what he meant when he said “she was flirting” and even with whom exactly.