I know, and i still hold hopes for her being somewhat BI, or at least lesbian for her, but thats why i stated that it needs proof even to my own theory, which i lack. It would make her actions in the early game more credible and less of a overeaction to losing a sex toy. But yeah, so far no proof.
I mean breakfast cereals arent of much importance to the story.

Just kidding. Nice catch.
She is binsexual (terrible pun. I know), I know more than one woman that is ok with having sex with women but do not find them appealing for a relationship.
I think the pimp falls in that category.
It is interesting isn't it?
The FV conversation (with Will) is on the prior wednesday.
Mia showing up with the 'special k' is the very...next...day....and the first time she calls it that name.
Sunday, Mia uses the term again.
The main problem here is that (as you're probably aware), the prof does a very good job of saying things and insinuating things without actually saying anything directly. All the signs point to Mia being a mole, but it's probably misdirection and a red herring. But it puts the thought into your head. Much like the Isaac timline, all the signs indicate something but the actual dialogue never backs it up.
It's like AI assuming Veronica is FV. She isn't, it's an actual physical impossibility as she cannot be in two places at once (and all the signs actually point to her being the Monster if you look deep enough). However, it takes some real effort to actually notice this. So one cannot discount this theory regarding Mia completely, and we have the Monster's warning.....but it's all a little too convenient don't you think...huge neon sign pointing to her.
However, still cannot discount the fact, neither her or Lacey have ever used this term before (that we see and K is mentioned a lot)...until Mia starts using it the day after FV does.....
Hah the AI was absolutely stumped when it came to understanding or guessing who TM or FV are.
I still hold a bit of hope that TM is MC himself, the chances are lower than low, but no one reads the messages other than MC, plus, MC at the beginning of the act says "when it will be my turn to be the monster in the relationship" (I can't access the scripts so it might be slightly different), also he is stated to be Isaac "monster".
So yeah, I am speculating over a very thin layer of info, and it is more what I would like to see than what it is in the material probably.
Uh, what are you implying with "special k"? That Mia is in cahoots with FV?
Well, there is always a big question, where did the pimp get several thousands of dollars worth of K, ok let's say she got it super cheap so she only spent hundreds, she still complains about not having money for a new bikini.
It is hard to reconcile these facts, maybe she spent too much on the K so she couldn't afford the bikini? But then her comment "I am not made of money" doesn't make much sense, I get that the pimp is not exactly the most accountable of characters, but if the money went into K, I would have expected a hint of regret at least.
I don't know, but everyone seems to have a rather easy access to K, so maybe FV found a way to supply the pimp? ,Also, where did all the K go???
We don't have enough info to answer any of this tbh.