Well, it's a bit tricky to pinpoint exactly, but it might be in one of the later volumes of the main series. You might have to do some detailed reading to find out for sure.
Sorry, I don't have the precise moment when Lili joins the Hestia Familia. You might need to look closely in the middle or later parts of the light novel for that detail.
A 'familia novel' often focuses on family relationships. It may depict the dynamics within a family, like the love, conflicts, and growth among family members.
A foto familia caricatura usually exaggerates the features of family members to create a humorous or fun effect. It might play with proportions, expressions, or add unique elements to make it stand out.