>>718471693
Her main role in normal route is to have a massive mental breakdown and fuck up in a way that makes everything worse. We just haven't gotten to that.
Noelle is a fake out character by nature. You're supposed to just think of her as the cute lesbian childhood friend for your first playthrough only to be taken aback by her actually being kind of fucked up and mentally tormented. Snowgrave basically gave away the game by showing how little it takes to push her down a dark path