Hello!! Thank you for playing the VN and giving your feedback, it means a lot to me!!
To answer your first question, well... its actually revealed at the very end, when you choose a character to be with.
And second question, you're totally 100% right, haha. The mother wasn't supposed to be depicted as in correct... but it was an attempt at humor, regardless, haha
The choices you'd have to make to get on the character's good side would sometimes be undesirable.. ;w;
But again, thank you for your feedback!!!