I love that idea, I truly do. BUT… how would M do that? I can only think of not so PG13 scenarios. How could M possibly diffuse or remind the detective of other/better ways/people who use nicknames for the detective in front of Bobby without using anything above PG13?
Besides whispering naughty things in the detective’s ear, naturally.
That is the thing, in my headcanon, my detective does not get uncomfortable with/regarding Bobby as she uses old nicknames. My detective still has kind of a soft spot for Bobby(though no romantic one), despite knowing better.
I highly doubt that
Rebecca the Agency would allow that. Though I would like to see if M has such abilities.