Exactly. They really had everyone convinced that Grace and Zoe would be a couple. Why have them kiss more than once? Why make them have sex? We'd have been okay if Grace had said that she was straight after that first or second kiss. But instead, she slept with a girl who really wanted a romantic relationship with her, despite knowing that she herself was straight. And yep. Zoe and Zig hooking up might not have entirely her fault, but she did play a part in it happening.
There was no purpose other than to screw with the fandom. I have to accept that it was all in character for Grace because ultimately, she’s a coward. She has no problem educating those around her and insisting they all own up to their shit, but she consistently cannot do the same. Still, we don’t see any clear scenes that indicate Grace is straight. I know she didn’t look completely comfortable when Zoe kissed her the first couple of times, but it’s strange for her to not say anything. Zoe was, in Grace’s own words, her best friend. She knew how deeply Zoe felt for her and yet, she never turned her down. Even if I believed Grace is a huge people pleaser (which she has never been), I couldn’t buy that her efforts to make Zoe happy led to giving the girl her virginity. Then afterwards, not to excuse Zoe, but I’m not sure how Grace expected her to react. She knew Zoe had exclusively dated boys. It was a big deal for her to sleep with Grace. Grace knows what Zoe is about because she knows her history with both Zig and Maya and knows that when Zoe is upset, she lashes out, i.e. “You’re a lovesick lesbian.” Previously she’d accepted those characteristics in Zoe. But afterwards, Grace has no sympathy for Zoe or mixed feelings about anything. Because Zoe hooked up with her crush (not because he was Maya’s boyfriend), she was a “notorious psychopath”. Also not because Zig was filmed without his consent. Her animosity towards Zoe seemed to stem from petty jealousy. I don’t know. Eventually, I’m going to watch Grace’s scenes from seasons 13-NC season 2, in order, hoping something will finally click and that I’ll understand this mess of a character. But I doubt it.Â