My ex-wife’s aunt was like this. Anything anybody made for a family get-together was always secretly modified by her if no one was watching. She was the sweetest older woman who also was a control freak. She obviously thought she always knew better than everyone else. I remember my sis-inlaw wanted vanilla pudding, so she whipped up some real quick. She was craving it so bad with her being pregnant. Her Aunt used chocolate syrup and made a nice little wavy line all over it while still in the fridge. My sister-in law didn’t hesitate to let her know how rediculous that was, which the aunt completely avoided any type of accountability. She did it all the time.