...I don't know about you guys, but I think Misa's just resolving the inherent emotional conflict of the situation (both from Io from having been assaulted and from Misa's jealousy) by giving Io an actually good, consentual sexual experience.
Sure, it's messy. Sure, she didn't ask how Io was. But it fits both of these characters perfectly. I know it can hurt if you've been in a similar situation, but the point of fiction like this is to portray a particular fantasy with a particular set of rules/logic and expectations- and in this case, this chapter fits perfectly with the expectations that have been set.
It's toxic yuri after all.
Hey, it is interesting!!! Plus, I don't wanna compare, but this is nothing compared to, what was it called...Sadistic Beauty Side B? the one with the guys...that's an abuse and rape fest, this is...well, toxic yuri indeed.