I'll leave a comment point by point to make it easier:
1. [Error] When we invited Bobbie to visit and offered her the option “Let's smoke some more weed!” She wants to eat, but after this action the pills and food disappear from the character's inventory, although the dialogue says that she opened the refrigerator.
2. [Idea] Very often I noticed that in order to train a character (NPC) for a large amount, it takes a lot of time to train it (unless you turn on the teleport mode, which accelerated this process many times over).
3. [Disadvantage] It is very strange that when we train Aria with inflation in the pool, her interest in it does not grow, it would just be interesting when we invite her home and then train her to fill with air through her ass and mouth, and so it's pretty illogical.
4. [Idea] (This is kind of a continuation of point 2) For the characters to practice from time to time when they are at home, for example Yumi, she is interested in inflating, and it would be great if she periodically practiced and how to brag to the character as much inflate.
5. [Question] Where did you get the idea of gas pills, is it a fictional medicine or does it really exist? (I'm just curious).