The Head and the Heart (The 100 - Bellamy Blake)
8 parts Complete Sienna Blake, wife of Bellamy Blake, was arrested, but not floated, for the crime of helping her husband and mother-in-law keep her sister-in-law Octavia a secret. She is one of The 100 who are sent down to Earth to repopulate it and also one of the ones captured and taken to Mount Weather.
"Prior to coming to Earth, Clarke Griffin never really knew what Sienna Blake saw in her husband Bellamy Blake. As far as Clarke was concerned, Bellamy Blake was an asshole who didn't seem to care about anything or anyone besides his wife and his sister. Now, however, things were different."
A/N - Sienna is the same age as Bellamy (23) when The 100 first land on Earth. This is set post season 2, and is canon-divergent from the end of it. Also, in this, Clarke doesn't leave.