You forgot how much she used to care. It's been too long-- too long to remember her secrets or remember the way her eyes lit up when she told them. It's true-- the truth really does set you free, and it's been too long for her to remember what freedom tastes like. She's too afraid to remember that. She's too afraid to remember anything, and that's the problem.
She's got empty glass-green eyes and an empty heart and an empty smile, and you haven't known what to make of it.
So you didn't even try.
You didn't try and you won't try and it's just too bad because she really does need saving. And no matter how many times you lie to yourself, you really do care. You care too much to fail her-- but you've failed at saving yourself. So how are you supposed to pretend you'll succeed at helping her?
Because you won't. And you're afraid to care.
She's too important to risk losing.