That was nice! Loved the cat's model and the music!
I wasn't aware that you could ask for cupcakes on the fridge, maybe a pop-up when getting close could help. I would also lean on the idea of the Tamagotchi more since it's so good. Maybe make the enemies deceased pets from owners that abandoned them, or put a filter/HUD on top of the screen to simulate the game happening inside a Tamagotchi.
Also cooking cupcakes to make hearts was a really nice touch! And the comments made by the enemies were really fun as well.
Overall a pretty cute game. Thanks for sharing!