Her chemistry with Apolo was insane! I mean she was great with Helio don't get me wrong, I think Helio was the better dancer and his routines were harder but he still did not come close to that passion that Apolo had with Julianne on that dance floor! They are the perfect match! At least on the dancer floor though I'm sure alot of people hoped it would lead to more!
Brother and sister relationship? That maybe what she is saying but not feeling. At 00:50 - 00:52 you can her true feelings for him. I believe she had warm feelings for him but I'm thinking he didn't for her.