My MIL situation has been going on for 23 years.
She has made up lies about me and told the whole family these awful lies for 20 years. She has told things like 2 of my 3 kids aren't my husbands kids. She says we had paternity tests done. She has told my both SIL that I have done all these horrible things to her. She wants nothing to do with my kids. My hubby only communicates with her if he calls her. She won't even call his cell.
I have written her off completely. She is not welcome in my home and I apologize to my hubby frequently but he always reminds me it is her not me.