I think you have a great working prototype with a solid idea. I liked the animations, especially the hair movement and the cauldron sprite looks really cool. I think the story outshines the gameplay at the moment, but I think you can make a great game out of this idea.
I saw your posts about wanting to add obstacles, which is exactly what I was thinking about while walking back and forth in the large open area behind the counter. I like your rat idea, perhaps they could eat some of your ingredients!
For even more spin off of that idea, perhaps you could save up money to get a cat that will help you fight off the rats, but might break the potion vials? I also think that the door to the south could become some kind of shop restocking area with its own minigame. I think you have so many options open and I'm excited to see what you implement in the future.
I wished there was a bit more of an ending if you fail. I only tested failing on the first quota so maybe there's more if you fail on other days. I also really liked how the customers slide backwards to the exit when they get impatient xD
Great job! <3