This game is most likely the first Dialog game written in French (for the 2022 French IFComp). As someone who's currently writing an English Dialog game, I was intrigued by this.
The author admittedly had to rush this game, but it feels pretty smooth overall. I only found one error message not translated ('You can't go in that direction', I think). I did feel like a lot of synonyms and alternate solutions were missing (especially for [mild early spoiler](Spoiler - click to show)trying to get the shining object stuck in the rubble; I tried PRENDRE, PRENDRE AVEC BRANCHE, POUSSER AVEC BRANCH, etc.). Thankfully, there's a walkthrough.
Story wise, your mother always told you sweet stories about a mirrored princess in an enchanted land. But when she dies, the journals she leaves you have notes and maps that indicate it all may be true.
I found the story quite cute and liked the ending. If the game were polished a bit more I think it would be quite good, despite its brevity.