Tracy can never replace Skye in Luke's affections. She's too much of a screwed up !@#$%^&*] to define Luke.
The most genuine relationship Tracy has ever had was with DIllon's nanny, Zoey, on THE CITY.
Their friendship was wonderful.
The last episode, Zoey was going to travel the world with Sydney's son and her farewell scene with Tracy she gave her a wonderful embrace and Tracy was taken aback but truly touched when Zoey said "I'll miss you, thank you."
Tracy is most certainly one of daytime's greatest characters.