Nothing is purely good or bad, I think. The coldness of clarity is a state in which she can get things done, but it puts her at an emotional distance from the things she's doing - she might do something logically that she regrets emotionally. It's a coping mechanism that puts off confrontation with internal problems in favour of externalization. This is all well and good, but you need a spren to force you to reflect upon yourself every once in a while, and let yourself feel the full impact of your circumstance.