Calidad, Women tie their feelings of love to respect. You earn he respect by setting boundaries about her behavior. You validate her feelings then set a boundary about how she talks to you.
"I understand you are stressed and don't like me right now. When you talk to me like that it is disrespectful, rude and a bad influence on the kids. The next time you do it, I will point it out and if you continue to do it I will record you out of control outbursts."
Does your phone have a camera? Know how to use it quickly.
She can't stand being around you because she knows that you are allowing her to behave badly (language & A) and you have not stood up for yourself, her or the family. The OM is a predator and deep down she wants your protection, it's primal. Boundaries provide her some safety which she is craving. Do you love her enough to protect her and your family from this OM? She wants to know that you do. She does not respect you right now, earn her respect back. Strong, loving and fearless works.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.