Mary perfectly straddles the line of being a loving and caring mother to her slightly-left-of-center son, and being a mother who is just as blunt and matter-of-fact as that same son.
Sheldon is not someone who takes kindly to being corrected, so sometimes the booksmart chap just has to get his life lessons from life itself.
The Big Bang Theory has gotten better and better at drawing the many characters’ family members into the fold, but this will be a really interesting look at characters we already know, just in younger capsules.
(She also played Metcalf’s younger version on Roseanne back in the day.)