I also thought the same. That would make too much sense and reduce the number of possible future problems significantly, so ofc is not going to happen.
I never thought I'd see the day someone picked up this manga. Thanks for the translation! I'm looking forward for the next chapters.
Edit: I'll have to reread it again to refresh my memory on what's going on. Not that I'm complaining.
I don't know why I get the feeling only Oriobana's human part dies and her tsugumomo part is still alive and needs a host to keep existing. And guess who's going to be that new host.