[TOMT] [children’s book]

Hi!
So there is this book I was thinking about that I used to read with my grandma a lot when I was younger, but I can’t for the life of me remember what it was called. I live in Norway, and the book was in Norwegian, but there may be an English version as well, I don’t know.

Here’s what I remember from the book:

-the main character was either a boy or a babysitter/grandma. The story follows them both, so I’m a little unsure.

-the babysitter/grandma was taking the boy for a walk, but she was afraid of everything. The boy was not.

-At some point in the book they come across a “ghost” which scares the babysitter/grandma. The ghost turns out to be the boys dog.

-There is also at one point a red ball there.

-The illustrations in the book is simple, but detailed. Their skin was white(white, not skin coloured). It kind of reminds me of Little Princess, the children’s show.

I read it when I was a kid, so 2003-2008 ish, but it was probably not a new book then.

Please help, I can’t stop thinking about it lol

Edit: formatting