Ok so I was having this same issue, you just have to progress through the story enough and you'll be able to max her out. If you get an option to see the boss before you've maxed her out then exchange info on all characters till the story progresses
What are you even talking about? The game is officialy translated, just change the language to english in the settings.
Oh... Stop... Really? I downloaded it like 2-3 days ago and there is auto translation...
What you downloaded is the 1.2 version that has Bepin added by someone which at least for me makes the game crash. The Bepin was probably forcing an auto translation since you were running the game in Japanese. But as i said before the game has an Official trasnaltion. So yeah changing to English in settings should get rid of the autotranslation, and if the game ever crashes on you, best get rid of the Bepin folder, its probably needed to mod the uncensor patch in, but id rather play censored than not play at all do to the game crashing every time i load a save.
