Actually I've been thinking it over and I may have an answer. If you get the DVD set of the show and read the character descriptions, they mention that Hanako died "tragically". I thinkits possilbe that what they meant was that she commited suicide.Thelack of shoes would make sense ofshe did this by jumping, as there is a convention in Japanese media of people removing their shoes before getting onto the ledge to jump.
Speaking of shoes.I wanted to tell you about aninteresting coincidenceI noted while surfing onebay for some haunted junction stuff. You know that line in the closing song where they saysomething along the lines of "the sunshine was beautiful, but part of me wanted to be unsure, so I took of just one of my shoes." Well it turns out that at some time ome of theJapanese model figurine compaines put out a model kit of Mitsuki and, somewhat Ironically it has her with one shoe off, and one on! (If you are still young, PLEASE, PLEASE, just take my word for this and don't try and check for yourself, as the model in question was evidently made for an adult crowd and is not appropriate for children. It also appered to be based on the magna rather than TV mutsuki so you wouldn't recognize it anyway.)