In the corner of the wardrobe she found a sliding panel that was made of very thin wood. It had a round hook on the upper end. Senja had to tiptoe to be able to reach it.
That hook was like a clasp, she pulled it out and heard a 'click' sound. The panel then slid open.
Senja looked in amazement at the number of the papers inside. It was a cache of sheets!
The thin panel was probably withering away and hence Senja had found the part with splinters. Aunt Hu could have also seen it when she had cleaned up the wardrobe, perhaps she hadn't paid much attention and thought nothing more of it.
Senja snatched a handful of the sheets and sat down on the floor while perusing the contents.
(You can nod your head if you like it.)
(I like the weather today. It's raining. I love rain.)
(What is your name? I am Senja.)
(Are you sure, you don't want to eat again? You need to eat more. Aunt Su told me that if you are sick you need to eat a lot, that way you will recover faster.)