I'm replaying, and I've reached the point where the female protagonists have adventures. Grey joined to the trio, recovered the swimsuit in the dungeon, but at this stage the skilltree should have been unlocked and the enemies should drop pearls, instead I can't access it nor do the enemies have any particular drops. I think it's a bug

The skilltree for the female adventurers can be accessed from the normal skilltree screen of your main party members, even while you're not on an adventure with them.

if i try to access the skilltree normally, i can interact with the female version too. but if i call the skilltree from the female version, i get the message that it is not available. i wanted to take a screenshot, but my save got bugged and i'm trying to figure out how to recover everything