Yeah, Lilly was a really interesting route..
There was a few things that helped me decide though. For one thing, she always acted prim and proper, and she tries to act as "normal" as possible. With that in mind, along with her family's assumed disapproval of her blindness, shows that she wants to look strong, look like she's in control. She didn't confess to the tutor that she had, mainly due to that she didn't want to "open" herself up to be hurt. The last clue that brought me to her personification is that when she fell down because of Kenji, it was the first time we get to see Lilly not in control. I believe that it was due to when Kenji grabbed her, she couldn't see it coming because of her blindness, and since she strives to look and act completely normal, it really affected her. Hopefully my ramblings aren't just some nonsense from an insane person haha
Actually I forgot about Shizune! It was around 3:30 in the morning when I typed that last post out haha.. I have to go replay Shizune's arc and then post more haha
Also, I came to another conclusion that maybe the reason why we are so motivated to do something after finishing katawa shoujo is because after we finish these stories, these girls become personifications of our own faults, and because these girls solved their problems (hopefully, assuming good endings), then it would show you that you can solve your own problems too. It reminds me of Eclectic Psychotherapy.