i am a similar case but i think my 99 is really wicked but she always (unshamefully) claims herself "from a well-educated family" and she considers herself "superior" than others. I have been tolerate because I don't want to press hard on my husband. But she is really sick as u see what she did to my husband (her son) & me:
1. she used to call my husband anytime she like even though my husband was very busy at work or in a meeting with clients, she refused to hang up her phone. but she is very considerate to her other sons, always said her other sons worked hard and so on..
2. My husband's grandparents wrote to 62 & 99 to ask for money, she wrote a letter and forced my husband to sign it to turn down his grandparents. (she got 3 sons in total, and it's ridiculous to ask a son to do so)
3. she called me (not husband) before my wedding and told me not to expect her or 62 would help us anything (my husband and i never dream of it, let alone we would ask)
4. after i gave birth to my kid, she came to my home any time she liked without telling my husband or me (really "great surprise"), one day i woke up around 8am and saw her in my living room, i thought i was having a nightmare.
5. after i gave birth to my child, she called five times a day (earliest at 6:30 am) to check if my mum or i had taken good care of my child, and instructed us to do things for my baby
6. critised i didn't have enough milk for my baby
7. walked straight into my bedroom without knocking and watched me breastfeeding
8. brought her friends to my home while i was "sitting moon" and my mum had to cook for her and her friends, and critised my mum's cooking
worst of all, this woman (always) pretends to be a victim if my husband or i don't listen to her, and speaks ill of us in front of other relatives....
i fell ill (for 6 months) and almost collapsed after my child's birth, and now i stop talking to this woman unless i meet her at relative gathering..
99 is really really horrible to me, how can a woman be so wicked, she doesn't only treat me bad but only to her own son, i always doubt if she 's really my husband's biological mum..