Help to find a cartoon

Edit: I found it, it was The Magic Riddle (1991). My description was quite far from the movie…

Hi guys, I am looking for a cartoon movie I saw long time ago, I think it is a cartoon from the 90s, maybe from 80s but not after 2000. I remember few things… There were three(?) sisters, and they were going in a well as a secret place. There was something related to the mother which was not nice with one of the sisters. I know that there were almost no animals in the movie, and the design was like this:

Image

Also it was never winter.

I have very few information… I hope someone will remember it!

Thanks