I've seen a lot of posts and resources here discussing how attraction and seduction actually work, so I'm hoping you guys can shed some light on this particular situation.

I'll try to keep this short as there's a lot of boring context and previous experiences. I'm a 21 year old student and I go to swing dance classes (couples dancing, look up lindy hop to see what it looks like) and I met this woman there. 35 years old, really good looks for that age. We kind of liked each other at first, talked a lot after classes, on facebook, etc. I should say here that the way she looks really reminds me of my ex-girlfriend's mother, who was also my teacher at high school, who I was really attracted to and had a lot of fantasies about (pretty usual horny teenager experiences).

So back to the woman from dance lessons. About 2 weeks after we met each other I started noticing her subtly coming on to me, mostly during the lessons themselves but also while we chatted online. Touching on the arms, constantly trying to dance with me, seductive gazes, always trying to initiate conversation and just interact with me in any way possible. At first I was pretty happy about it, but soon after I immediately started feeling somewhat off. What I mean by off is while I was attracted to her physically, I would actively try to avoid talking to her, mainly because her personality is basically the horniest 15 year old girl who just discovered what sexuality is and is actively shoving this in your face. This frustrates me to no end, and I haven't the slightest clue why. If I was 5 or 6 years younger, I would be all over anyone who showed barely any affection to me, but now I'm almost turned off by an honest display of it.

Another important detail is that very quickly after we met, I unintentionally started pushing back. This included very creative insults which she takes very well, straight up telling her to fuck off (in a joking manner) when she talked to me, never initiating any interaction. I realize now that I accidentally managed to show interest while also showing disregard, or however else the holy grail of PUAs and "game" is supposed to be phrased. This resulted in her becoming more and more consistent with her approaches, until I recently just straight up told her that I knew what she wanted sex, but I find her really annoying, hoping that complete honesty would result in a development of some kind. She was actually thankful for me being so upfront and pretty much nothing changed.

I'm trying to wrap my head around this and why I'm actually repelled by her. Is it the fact that I put basically no effort into talking to her and she was always there, making it too easy? Is it her resemblance to my ex's mother, who I had so long lusted after? And why exactly does her juvenile personality drive me insane and makes me want to punch her? Maybe the combination of pleasant/unpleasant memories and the mismatch between her age and how she behaves just induces some sort of cognitive dissonance and confuses the fuck out of me? Any insights are greatly apprecited.

TL;DR: Penis wants woman, brain doesn't want woman, help