I like her enthusiasm and drive. She seems to put a lot of time and effort into her training, which explains why she's doing well. It does help that she already knew her partner. It gives her a head start in building confidence. It's one thing to know that someone's good before you meet, but if you already know them, you have a higher level of trust in them than you would if you'd just met that person and as a result you're willing to take a few more risks than you would with someone you don't know.
She doesn't come across as cocky to me. She's confident. There's a difference.
I think the only time I saw her cry was when Dan dropped her, and I think we can safely say that being dropped in a situation like that would probably be enough to make anyone cry.
I'd say she's the current front-runner, but Daniella's a close second and is playing catch-up. They've got to keep pushing it to stay ahead and I'm looking forward to the rest of the competition, because if the standard is this good now, what will it be like later?
As for Hayley's smile, OK, it's a bit stage school when she's performing, but that's how she's been trained. The other thing to consider is that she's one of these smiley people anyway, and that's bound to offend more than a few grumps regardless! It says more about them than it does about her.