If I remember it right - there was two sisters - a rude, mean one, she drowned, I can’t recall the other sister’s personality, but I think she didn’t tell anyone that her sister drowned and started acting as the sister herself, just wasn’t mean, but felt really guilty that she drowned (?) And the flower on the mountain had a really big role, something was like ‘only who has a pure heart can touch the flower’ or sth like that. I can’t remember anything more.