I have this hunch the author is setting up the "I'M GONNA DISSAPEAR!" recurring joke for a final sad ending later on when she actually disappears for real.
Edit:Nevermind I saw the raws, it's a short 8 chap fluffy romance all the way to the end.
I say "end" but it doesn't really have a concrete ending at all.
Not much happens except cute blushing looks.