I had exactly the same vibes from Emma since the start of the game, with her being as assertive and competitive and that early sex scene at the party...

Afterwards it becomes clearer that Deb and Kim will definitely have more femdom content, but tbh I still suspect that if you play as a submissive MC Emma will be the one with the most femdom-leaning vanilla relationship (of the rest of the LIs) - something about her fiery personality tells me there could be even CBT, caning, whipping or pegging there, (not just light fetishes) or at least the potential for it... The dev has been pretty good thus far at partitioning various fetishes rather fairly/equally, so there is hope with Nif that he'll keep to his promise and give at least a light femdom spin to most of the girls!
Oh no! Not comrade Olivia with her "free love" mindset that reminds me of Alexandra Kollontai and revolutionary Bo Burnham Special lines! My red heart aches!

In all honesty I also think it's most likely her or Bri, (cause we barely know anything about her fetishes yet lol) although I still hope it's the voyeurism girl (forgot her name at the moment), as I both find her to be one of the least attractive LIs in the game and am not into her kink at all. (plus that her fetish is after all a bit of a humiliation-adjacent fetish, so I think she's also a potential candidate for being the "no femdom LI"

)