Are you sure the boobjob from the signature is the one in the basement? I had that one already and it was with her shirt on... Or does that change after you get the permissive state?
Permissive is considered like a "neutral" ending, if you will. The Passionate path being the "good" ending and the Strict the "bad" one. Currently those only affect a couple of scenes but eventually they'll be important. If you got the "Strict" one, there's the chance she won't have any type of sex with you, Permissive grants you access to it but the scenes are gonna be less sexy and the dialogue is pretty much along the lines of it being sort of a chore and Passionate is... well, passionate. Scenes are sexier and the dialogue is a bit more lewd.
Now, if you already got her into a specific path and want to change it, bad luck buddy, you're locked with your decision. We don't know if later on we would be able to change the State a girl is in (like retry the "questionnaire" or simply flip a switch to alternate between them) so your best bet is return to a savefile where you still haven't picked her State.
If you already done fucked it up with having no previous saves or just using one save slot (please avoid doing so, there's other 14 slots to save in), check the "State Ready" link below the banners on my comment and read the post to know what to do