[TOMT][MOVIE]Two little girls and a slenderman??

As to where I watched it, I remember it being Tubi or some other free movie platform. It started off with these two little girls and a younger girl in the forest. They either abandoned or killed the younger girl during a game of hide and seek. There WAS a log involved.

Also, in the end of the movie, both of the fates of the girls are announced and one of the girls goes to juvie and plants flowers or something, can’t remember.

When they were asked why they did it, they said something like “The rain man” told us to. That’s also what title of the movie should be. But keyword should. My problem is that it isn’t actually rain man, but something else. If I can remember the middle word, I can find it again.