Ellie Nova's Links
Ellie looks up to Nick in a grateful manner, viewing him as weak in spirit but powerful in skill. She cares for him the best she can, and tries to help him process is traumas.
Despite Nick creating her, Nick views Ellie as sort of a mother figure; kind, tender, and caring. He does his best to ensure she's always functioning properly, and would kill for her. Literally. He's done it before.