According to many hinted information plus the direct evidence (her journal put together), she has seen something horrible in her dreams that was talking to her, driving her mad.
Is there something to explore here lorewise, or the answer is as dumb as I expect it, and is “you know, the dragon that wasn’t even awake to do anything. Not even dumb explanation telepathy”.
It was such a big letdown at the end animation before we kill her.
Scarlet: You want to know why I did it?
HELL YES I want to know we’ve been struggling with this post-forced-to-story annoying character for a very long time now, what motivates her? Can she be an interesting character, trying to save us from the dragons and killing everyone who stands in her way? Or she is just plain simple evil one liner spammer? Either way, what motivated her?
Braham: Doesn’t matters now! We’ll put an end to this!
Really? I mean, REALLY!? After all that teasing, and even the facebook short stories and secrets behind Scarlet, at the final moment ANet even writes her words to make her tell those motivations, and we don’t get ANYTHING?!
