What Yuki-onna is after varies from tale to tale. Sometimes she is simply satisfied to see a victim die. Other times, she is more vampiric, draining her victims' blood or "life force." She occasionally takes on a succubus-like manner, preying on weak-willed men to drain or freeze them through sex or a kiss.[15]
the author is really trying to portray the bitch as a decent human despite the plot. I'm sure in the end he will reveal her sobbed story past, got redeem, and have a happy ending. There is too much rainbow for me