Should've tried to convince her ghost to be her stand. Would've been epic.
Edit: Now that I finished I think the author could've gotten away with my idea better for the ending than what the heck the ending was. That ending was just... Something. Was it like axed or did the author really try to...
The home economics room... Huh nice world building. By itself it would been a 7/10 but since we know it takes place in the other series I give it a 9.5/10