Since I was already convinced that Dan was a good guy, it was hard for me to go along with Julia's distrust, especially in the face of the slashes in his arms. Perhaps a one-sentence reminder (in Julia's POV) of one of the guys who betrayed her family while acting like their friend would make her distrust seem more reasonable. Or perhaps a one-sentence thought of her needing to resist her desire to accept him as a friend. That way, she would seem to want to trust him, but then she would have a reason to stiffen her resistance--like because almost everyone in the known galaxy is after her.
Another good chapter, Nan!