Thank you so much for the feedback! You don't understand how much I wanted to get some feedback so this I really do appreciate. I don't know much about game dev so I tried my best!
Let me try to help with the last ending there. (spoilers)
For the last ending there are hints. So the standard ingredients like potato and bluefish, ect are red herring if you do not find the flowers. This allows players to at least get the bad end if they do not get the flowers. I'll try my best not to give out the solution but here are the hints. They may not be as obvious as they should be. Which I could work on. First hint for true ending is if you lift the lids to the serving tray the puppet will mention to find all four flowers. They also say "Do you like day to night, or was it night to day?" The other hint is the dinner note saying Serena and Vic would share shadowveil tea and then some red hibiscus wine. The other hint is in the kitchen the book that is in there. Try other combinations of tonic once solved it will say true tonic if you got it right. Hopefully this helps.