I read this book in the 60's when I was in elementary school, it could even date back to the 40's or 50's . About a little girl named Katrinka? Or Katrina who lived in a forest. There came a terrible storm in the night and caused a huge tree to fall that allowed her to cross to the other side of the forest. There she found a dwarf's abandoned cottage where she befriended a little bear who she cooked and cared for. Can you help be find the title/copy of this book for my grandchildren? It's a wonderful story.