So what have you done so far, did you see you could interact with her tank, pull her down?
What looks like the thing in the locker cant be interacted with?
Yes, but you have to move forward in your interactions with Sophie to unlock the need to use it.
yeah I've done that, pulled her down and placed cement, played with her, but nothing to inflate her more
Well after that you go back to her and take things further. More than that, I feel I can't say, I don't want to spoil. I hope you understand.