"Misogyny"? Seriously? It's a pretty standard slap/kiss thing (at least on her end).
a) The slap/kiss thing IS a misogynist trope, and b) this is more than "slap" then "kiss," because it's "date raped while blackout drunk, and told him to get the fuck out of the apartment he was living in rent-free," then "let him fuck her on the kitchen floor just because he kissed her." That's a COMPLETELY misogynistic portrayal, because once again, it emphasizes that Michelle's bitchy front was just a cover for the fact that she was yearning for Peter's cock to set her straight.