I just watched this movie again tonight, so i'll add to my previous post on this thread. Kanna specifically mentions at one point that Mizuho, Tsuyoshi's girlfriend, came over to the house once. So yeah, that doomed her.
No disrespect intended, sir, but shove it up your ass!

Her boyfriend lived in the house. It stands to reason that she would have gone there at some point.
Sig under construction

Oh I thought she was Mizuho on the morgue! So it was Hisayo Hisayo is shown in the very first short film from 1998 "Katasumi", she's Kanna's classmate and she's with her looking up for the rabbit.
Interesting!
Please excuse my terrible redaction, english is not my native language.

If I remember, earlier in the show, Kanna says something like "Mizuho came to the house once". Still though, that doesn't explain what happened to Hisae(The girl who's body the doctor and the detectives were investigating). I think in the earlier Ju-ons, Takashi Shimizu was trying to make the curse something that could eventually spread and affect people beyond just the house, so you could never really be sure who would be next.