Death isn't an end, it's more of a speed-bump.
Victimised, Cassie lives under the shadow of Thaddius. When Harry sticks up for her in a school-yard dispute, he unwittingly causes her eventual death at the hands of Thaddius. Caught between her conflicting loves and hates, Cassie returns to haunt her small town as a vengeful spirit of water.
Please note: I am going to change the title back to 'Crying in the Rain' as soon as possible.