Kate returns the smile, trying to bolster Rudy's shaky confidence.

(Really, he's not terrible -- he just has a case of nerves.)

"If I didn't know any better, deputy, I'd say you've had lessons."

The color in Rudy's cheeks deepens, and it takes considerable control on Kate's part to keep her grin in check.

(It's possible she has a soft spot for Rudy; he tends to unwittingly bear the brunt of most of the jokes around the department.)

And I don't know what you've been told
But the streets of where I'm from
Are paved with hearts instead of gold

"Kate, Jesus, I'm sorry -- "

"No, no, it's okay -- "

She hobbles toward the edge of the dance floor.

"Jesus Christ, lemme get you somethin', some ice, or a shot of somethin' -- "

"Rudy, really, I'm -- "

"But lemme -- "

"Rudy."

"I'm sorry."

"It's okay."

"It looks like it's swellin' -- "

Yeah, the streets of where I'm from
Are paved with hearts instead of gold

She manages a chuckle as she massages her aching ankle.

"I'm fine, I promise. I'll sit this next one out, and then I want another dance from you."

She can't decide if he looks more surprised or shocked.

"Kate, you're a brave, brave woman."