Extend the Story - Add a Room

Standing out front trying to pick the lock was risky. Jezirea wasn't the most skilled lock pick, and she never knew how long it would take her to do it. She might end up having to stand out front for up to five minutes and that only increased the chances of her being seen.
Plus, an unlocked window was just that much more convenient.

Jezirea made her way around the building, staying in the shadows, and checking each window. The building was small, and there weren't many windows to check, but Jezirea was counting her lucky stars when she found one unlocked window around the back side of the building.

She slid it open quietly, and then pulled herself up on to the sill; hauling herself in to the room as carefully as she could.
With one leg over the sill she stepped in to the room, only to have her other foot catch on something. Caught off guard she stumbled and fell the rest of the way in to the room, knocking over a chair in the process.

Jezirea lay on the floor in a heap, in pain, and silently listening to see if anyone had heard the noise and come to investigate.
A low growl split the silence, starteling her. The room was dark, but she could see a pair of eye not more than two feet infront of her face; shining brightly even with what little light filtered in to the room.
The growl intensified, and Jezirea's heart lurched. It had to be a dog, and judging by the black sillhouette she could just barely make out, it was a very large dog at that.
Shit...

Quicker than she knew she could move, Jezirea jumped up, and leapt on top of the tallest object in the room; a filing cabinet. The dog jumped up after her, barking loudly. Standing on its hind paws and leaning against the filing cabinet, his jaws were just inches away from Jezirea's feet. She pulled her body up, back against the wall. What the hell was she supposed to do now?

She looked about the room hurriedly, trying to assess her options.
On the other side of the room was a door, leading off in to the building. Even if she could reach it, did she want to stay in the building now that the dog was making such a fuss?
The window she had come in through was just out of her reach, to the left of the filing cabinet. Perhaps, if she was quick, she could jump down and then out through the window. The question was, how fast was the dog?
There wasn't anything in her immediate vicinity that she could use to distract it with.

She really wished she'd taken a snack from the pub earlier.

Go for the door.