I've learned to Keep Away from "Mom". She used to show up at the house 4+ times a day -- peeking in the windows if we didn't answer the door. One day, the neighbor was going to call the police -- thought she was a prowler. 
 
Calls at a certain time for "Bed Check" to see if all of her "Ducklings" have checked in for the day. 
 
Upon cleaning out her sister's house (after her sister passed), my Mother-in-law's children found $45,000 in cash. That evening, when they asked (jokingly) if she was going to buy them a hamburger (49 cents), she replied, "Why should I???" -- her own children. 
 
I've tried! I was mowing her grass to try and get into favor after my own Mom passed. My mother-in-law's mower was 25 years old and had been worked on by all the mechanics in the family (free of charge, of course). After mowing for an entire season, and at the beginning of the next season, the mower belt broke (a $4.00 part), I was reprimanded for 10 minutes about what a rotten person I was for "disobeying" her command not to mow when the grass was wet (it was around 11 a.m.). I walked away and she followed continuing to berate me. I finally cussed her out and walked two miles back to our house. I then put the letter of the law down to my husband and packed my bags. 
 
Well, he went back and told dear "Mom" off. Let's just say that her two daughters have moved away (so she can't stalk them and she is too cheap to call them long-distance, and too stupid to figure out that she can call them on the cell phone the daughters bought for her). It's sad, but her kids have stated that, "If she wasn't my mom, I wouldn't have ANYTHING to do with her." 
 
My sentiments are "DITTO". She is rude, cheap, nasty, and heartless. Funny how she claims how "religious" she is. One thing she has right -- the DEVIL goes to church every Sunday. Hummmm....