You can make the same argument for her sub route. Missy doesn't voluntarily sub, she is just forced into it and mercilessly hazed until she develops Stockholm, while everyone else is just leaves her to her unfortunate fate (critical mistake by the Pop Girls, even in the dom route Malia initially claims there is not much you can do from the moment Poppy got Missy in her visor). As of now, dom or sub Missy right now is just a reactor between the powers that are for now, with the difference being how proactively Missy defends herself and how much functionality of her kidneys she is willing to sacrifice. Yet as far as I can tell it looks as if Missy can end up joining both teams and hopefully take over them as well.i've done down with the bad girls and it ends like that but not because of missy its more like the popular girls bring poppy to her knees and they use missy as a prop to humiliate her but its not missy herself if that makes sense, so its not missy domming poppy its just her being involved in someone elses revenge, its why i joined the bad girls for avenging angel because i want to do to poppy what poppy did to the last leader. Also on that ending talking about the poppy ending its still poppy being dommy over missy making her worship her panties and facesitting missy where the reverse doesnt feel too missy controlled even after we've already kicked poppys ass. also also after being the one to bring angel literally to her knees we dont even get to take part in domming her after.
over all a lot of the time Missy doesnt feel very dominant on her domme path but more of a tool being used by someone else doing the domming.