Oh my, I'm sorry! If you talk to Maple's mom in the maze, she will give you money!
From the screenshot you showed me, you're in area one. There's a place where you do need money, so that's why there was confusion. In terms of trading, you need three hazelnuts. Two of them are in area one, and the second one in area two. They look like this: https://ibb.co/h1uRTG
Talk to the witch afterwards, and she'll give you juice. Then talk to the girls sitting in area two and you'll get a second juice. After you talk to juice girl, she'll give you a key, and you can open the box next to her and continue on. Hope that helps and thank you for playing still!