One of my personal favorites so far that I've played! Loved that it was a fully self-contained experience with a complete story, two levels, and a boss. The art was adorable and the amount of care and attention put into the animations for the protagonist was obvious. Loved how you had an animation for everything, including "unnecessary" stuff like looking up, crouching, or her tapping her foot during dialogue. Really gave a sense of professionalism and polish to the whole thing.
The platformer mechanics, while fairly basic, I think were well-executed, and I thought the challenge level was just right for a game jam. I had no problems with the controls or movement and the level design was solid. Liked the little bit of enemy design with the scarecrows and ghosts.
The theme I thought was definitely there in the thematic elements of the narrative, and just a little bit in the gameplay with the invincibility period after getting hit and during the last boss.
I feel like you invested your time wisely by focusing on the animations, level design, and narrative first and foremost, but as far as feedback for further improvements if you do more on this project, I'm sure you already know this, but nicer tiles/background art would make a big difference. I did also run into some issues when hit by the ghosts including once getting softlocked and having to restart the level.
In any case, great work!