Millie!

My younger daughter in law and I have developed a close relationship. But we have struggled with what she should call me. "Sue" seems too impersonal. And she is very close to her own mom, so calling me "Mom" doesn't seem right. And "Mother-in-law or Mom-in-law" is too much of a mouthful.

So! I suggested she call me "Millie", which I shortened from MIL (mother-in-law). And she is! It is an affectionate term she can use for me, the other mom in her life.