I was under the impression that "mom" is the US spelling and "mum" is the UK one, but I'm not a native speaker so I don't know if this is really the case.
Unless they make the S3 arc about Michael finding Mama Burnham If they do, I hope like hell it's a b-plot.
I doubt it will be a plot at all. They'll have to find something big, like the Milky Way, has been taken over by crablike aliens from Andromeda or something.
The Kelvins were not crablike. Galaxies are big and Andromeda is even bigger than ours. Surely there could be two villainous species in one galaxy.
I didn't know that people used both. I thought it was one or the other depending on your location/country.
I'd love it if Burnham just kept floating the suggestion that they go looking for her mom at every single command staff meeting just like how Cato the Elder kept quipping "by the way, Carthage must be destroyed," and eventually Saru would learn just simply ignore her whenever she brings it up. Bonus points if Georgiou would try to suggest building their very own empire at every meeting as well. Saru: "Alright, we finally saved the galaxy - again, I might add. Do you have any ideas on where we should go next?" Burnham: "We could go look for my mom." Georgiou: "Everybody has been weakened by these ridiculous crabs and we are the only ship around with a Spore Drive. I'd say the galaxy is ripe for conquest." Saru: "No ideas at all? Alright, then I shall order the computer to choose a random uncharted planetary system once again. Dismissed."