I don't want to throw out any spoilers in the comments like that but I can say many characters are going to receive their own weight gain in a future free update, when chapter 2 will be ready! :D
Viewing post in Expanding Universe: A Filling Journey comments
Spoiler ahead:
Try telling Perlene you're looking forward to your next meeting.
As to the maid, there are two opportunities. One is for example to tell her that your walk with Rosalind was a little bit romantic. Then you have to be on Emilia's route. And when she asks you if you're in some kind of palace romance, ask her back if she wants to be included!