Hi, looking for a story about a Mother who reveals to her son that she has a submissive relationship before she married his father. She met an older man who showed her the don/sub relationship before he died. She then married and her new husband who wasn't strong enough to take control. Son does
I vaguely remember a story in which this was a side plot. I believe the son was uncomfortable with his role, and sought out a new dom for his mother. Unlikely to be the story you're looking for, but perhaps someone can remember the author and title so you can rule it out.
AJ
I am sure this is not the story you're looking for (no training of mom by another Dominant), but it definitely is along the lines of what you're seeking:
Older and Sexier by Caesar.
Son's a Dominant, but not by training. Mom turns out to be submissive, dad's a joke.