Viability: Straightforward and easy to understand. If some replay value was wanted for this, maybe being able to try making the potion before having all the ingredients and it blowing up or something, different options like that, could make some different endings.
Presentation: The color scheme is nice and warm, fitting to the vibe of the game. The descriptions are good, and the little pictures of items are cute.
Theme: The cozy magic school feeling is really nice, and with the descriptions it is easy to imagine the environments. If there was more time to work on this then I can see little images for the characters being used and "talking head" boxes for their dialogue, or pictures of the cute little areas we visit.
Engagement: It is interesting that you can choose "bad" decisions like stealing or leaving the animal, but it seems as if there are no real repercussions to making these choices. If the game is further developed, maybe getting caught stealing or having the animal help you out after you help it would add some variability.
-Tina