They're decently trained! ...Which is well below Iroh's standards for their crew, let alone Zuko. 

She can take them down without too much noise or more than a few bruises to herself, but she might want to move quickly now.

Yeah. Fortunately a locked prison door is much easier to open from the outside-

Is the Avatar... asleep?

"Hey! Wake up!"

Shit, is she still breathing-

Zzzzzzz.

Still alive, just- drugged?

Well. That makes this harder.

The girl is actually tiny, so Zuko has no problem getting her up and across her shoulders. She'll just have to avoid entanglements on the way out. Easy.

It is, apparently, much harder to scale that cliff while carrying even a tiny girl. Zuko might need to find enough rope to improvise a sling, or go the long way around to get back.

Nnnn. She doesn't really have time for either of those...

"It'd be real convenient if you would wake up now," she says, jostling her passenger a little.

Hmmmmzzzzzznope too comfy. Snuggle.

"Hey, no, come on. Wake up."

Nuh.

She hears some booted footsteps around a corner. 

Okay yeah she doesn't have time for this. Avatar can get dropped to the ground so she can ambush the patrol.

Wah!

Fortunately she has catlike reflexes and can turn this into an impromptu handspring.

"Guards coming. Get ready."

"I guess this is a rescue, then? Sure, whatever you say, dashingly heroic masked swordswoman."

Ugh.

Patrol contains two firebenders! Zuko can probably pull off an ambush, take down at least one before they can raise the alarm, though that depends on Dechen's ability to keep quiet.

Dechen can help! It'll be a pincer attack.

This almost works! ...Except one of the firebenders gets off a flare - punching fire into the air - before she goes down.

Oops.

...The Avatar wasn't fighting to kill.

"We need to get out of here."