Hi!
The stats don't matter for finding these choices (or much in general at the moment). It is just 1) Have the choices visible. If you skip to C1 for example I think it is off by default. At the bottom of the character profile there is the cencor button but the change does not happen until the next page if I remember correctly. So maybe go back one page and put it on.
2) Find the "path". In chapter 1 there are a few spots, including the tongue thing. But I think you need to run away from Havard (the Custodian) to find it, I do not remember the details. Also if you want angst, investigate the table after waking up as much as possible.
3) In Chapter 3 there is the is the garden scene which you just need to choose the options for (and go on the tour with Lexia). Here the flavor text changes somewhat with your trust stat, I think.
Hope this helps! Thank you both for enjoying my story!