I don’t think it would ever happen in canon, but I am always down for noncanon prompts! Even if I’m behind on the ones I already have, which are coming along, I promise.
Honestly, I’d never thought of a situation like that. Zepheera’s mother Klerida is a fiery spirit and certainly wouldn’t be an exception to the trend of the Doctor getting slapped by his companion’s mothers. His poor cheek!
But man, would he be honored to meet Zeph’s dad. He’s a much gentler soul than Klerida, but also determined and the incurable optimist. They’d definitely get along if given enough time together.
Who knows, this might pop up as a drabble one day. Thanks for the idea!
Brothers Apart 