Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: If anyone wants the (also long) prologue to this post, it is the only other post I have made with this account. FWIW everyone in this situation is 30+.

Long story short, an acquaintance of my partner's and mine I'll call "Brittany" had been overtly hitting on him, even in front of me.

I expressed my reservations about the situation to my partner. He initially didn't understand where I was coming from, but once I took us out of the equation and asked "If I genuinely wanted to make friends with Jen (a mutual female friend of ours) and acted that way towards Jen's boyfriend in front of Jen, how do you think she might feel about it? Would that be a good way to start a friendship with Jen if being her friend was my primary motive?" it landed.

Apparently my partner then talked to Brittany on a game night I couldn't attend in an attempt to establish some boundaries. I know this not because he told me, but because I received a lengthy email from Brittany a few days later.

She framed it like an apology and ostensibly a request to make friends going forward, and she did share a lot of fairly personal details about herself on which she essentially blamed her actions, but there were parts of it that felt - for lack of a better way to put it - a little passive-aggressive. Things like her claiming that she did flirt with him but stopped as soon as she realized we were a couple (untrue). Things like "Your partner had great things to say about your looks and abilities," implying NOT ONLY that they discussed these things (my partner is adamant that they didn't) but that my relationship with him somehow needs Brittany's stamp of approval now that she's realized she isn't getting in the middle of it.

Between that and the fact she only expressed a willingness to tone down her behavior after being directly called out on it by him, I'm hesitant to believe that her message comes from anywhere genuine.

WIBTA if I totally ignore all 12-ish paragraphs of her "apology" and continue to keep her at arm's length going forward?

I talked to my partner and he supports that course of action, but I'd like a broader perspective since I'm still likely to run into Brittany at practices and games and she may or may not choose to start discussing the situation with our mutual friends, a la "ProfanePsittacine isn't accepting my heartfelt apology for a misunderstanding between us." She has now begun liking and commenting on everything I post to social media, so I'm definitely going to *look* like the asshole to all our friends if I continue to keep my distance.

TL;DR: want to know if I am obligated to accept an apology from, and bury the hatchet with, someone who is now being nice to me on the surface after a call-out but whom I still have a bad gut feeling about.

ignoring an e-mail apology from the girl who's been hitting on my partner in front of me