Keen comes out as a combination between naive, gullible stupid, liar, week, arrogant, disloyal, erratic, almost smart....why? Actually, she kind of qualifies as a sociopath. She gets fixations and when she does not obtain what she wants she moves to manipulation, kidnapping and killing. She gets more people killed then the villains in the series. Sane persons do not marry killers or abandon their kids to go hunting for secrets for years while managing to stir issues wherever they go.
Keen is a no for me, I was so happy when she died.
The show is awesome though, everyone is great at their parts