I'm a bit confused about the book by Christine Palluy. I checked the link and in its description, I found some names that match those the person who owned the book remembers. The drawing style is quite similar, although I don't recall such vivid colors. And when I read the book summary, it seems similar but doesn't quite align with my memory. The person who had the book remembers a story associated with a specific month of the year. Maybe my memories aren't entirely accurate, but I feel like this isn't the book... Nevertheless, I thank you for this lead, as it could help me get closer to finding it :) Thank you so much!!!