[kridsdale1]

That’s not what’s happening. Snow Crash has an omniscient 3rd person narrator.

A protagonist (but not THAT Protagonist!) is named Y.T. (street nickname for Yours Truly) and her mom doesn’t matter. She’s environmental set dressing.

[OJFord]

Called YT by someone other than herself?

[dredmorbius]

I'm not sure she's actually addressed as such by others in the story, but it's how the narrator addresses her. And IIRC how she introduces herself to the hero protagonist (Hiro Protagonist) on first meeting.

In a later work she's referenced as Miss Matheson.