@DrWhoCares I wasn't sure what would be equally cutesy in English. Normally it'd be "Master" or "Sir", but I wasn't sure how to translate -sama > -tama. Mostly cause I don't have a cute bone in my body. So I simply hoped that the reader'd understand that the honorific being used was nonstandard, either through prior experience or by Sensei's reaction.
The closest I can come up with is something like "Myaaster" or "Nyaaster"...cause she's a cat maid. If you have a suggestion (or if I'm totally off-point), feel free to tell me.
P.S. I actually did have a chance to visit the maid cafe at fanime last weekend, but I didn't. It would've been great reference material.
P.P.S. Yes I misspelled ご主人, cause in my head I went ご注文, so ごちゅうじん.... but yeah, I'll fix that at some point.