So, I will forever have to interact with my spouse and his parents, because we have a son together. We are not legally separated/divorced yet, but I don't foresee any reconciliation. My father-in-law, at least acknowledges me, while my mother-in-law tries her very best to ignore me and remain disdainful. Not surprising - I'm not at all offended. My issue is how to address them. I had been calling them Athai/Mama, and changing it to Aunty/Uncle feels a bit unnatural. I suppose it's the right thing to do, but what do you call your ex-inlaws?