Wow, this one starts out with a .1 now. Not even an attempt to have one coherent chapter.
More importantly than her getting suspicious, it would just be pretty harsh for poor yuri!Marika. Imagine she comes back and suddenly has bad grades. You can ruin a life like that lol
The swap because of sexuality idea is getting more likely by the chapter. Although yuri!Marika had it quite a bit worse than normal!Marika, with her sexuality basically not even existing in that world for obvious reasons. Kinda like being sexually attracted to dinosaurs. Almost makes you hope they can stay in each other's worlds once they find out how to communicate.
Little broster will probably turn around on it eventually when they tell her. The whole yandere feeling has become much less prominent now.