How to talk to Secret Guild Fairy called "???"?

[Arrpeegeer]

Hello fellow role players, I was just wondering how to talk to that secret guild fairy "???" who talks in dots.

I've tried using every member in active party with the max intelligence boosts available. No joy

I know she's most probably not important in the game but I'm stumped
and it really bugs being stumped

Current stage in game is just after the defeat of the big bad robot who chases you everywhere in science lab.

Thanks to anyone who can give a hint to get my brain thinking on the right track.

Cheers!