Complex sentence: In the capsule, Martha implores Riley to have faith in the Doctor, wondering why he has not found anyone in his life to have faith in--his family is all but gone and he has no romantic attachments.
Split into simpler sentences: In the capsule, Martha implores Riley to have faith in the Doctor, wondering why he has not found anyone in his life to have faith in. He states his family is all but gone and he has no romantic attachments.