SOLVED. Childrens fantasy (?), similar to Anne of green gable, missing necklace [s]

[Jesse]

I have a vague memory of a book that seems like it was sort of similar to Anne of green gables, where the main character (who I think was a girl??) was sent away to live somewhere, and ended up in an attic room that she really liked? I think the room had a door that looked like a tree? The only part of the plot I can remember is that they stored their milk and butter in a little cupboard by a pond or a creek, and there was something really valuable (it might have been a pearl necklace?) that had been missing for a really long time that ended up being hidden with the butter? I think I read it around 2010-2014? For some reason I think there was magic but I have no details about this
Anyone know this book?
Thanks!

[Sue]

The Little White Horse by Elizabeth Goudge. The necklace is found tucked into a hole in the side of a well. https://www.google.com/url?sa=t&r...
(They mucked the storyline up completely when they made the film)

[Jesse]

Sue wrote: "The Little White Horse by Elizabeth Goudge. The necklace is found tucked into a hole in the side of a well. https://www.google.com/url?sa=t&r......"

Yeah that’s it!! Thank you so much this has been driving me crazy!