Hi there. Just a player here. Your save files are in the "game" folder of the "our-life-nf" folder. They're basically in the place where you installed the game. Hoped this helped!
First of all, bring the bunny to the other side, return with nothing, then take the flowers/cat to the other side. After that, bring the bunny back, take the cat/flowers to the other side, return with nothing, get the bunny to the other side. The witch will give you an item that will get you an extra cutscene when you meet "that".
