Refuting Entropy

OK, Jessica (my 14 year old) wants to dress as the character "River" from Firefly/Serenity for InConJunction this year. I have one week to come up with a dress for her. However, I'm not a fan of the show, so I can only get sketchy pictures of what she looks like from Google Image.

Jess said something about a plain, dark colored dress, either long or short-sleeved, but from the pictures I've seen it seems to be slightly more involved than that.

Does anyone have any suggestions as to what I can help her put together, for not very much money or in not a very complicated fashion?

I really want to help her out, she thoroughly enjoys the masquerade & wearing a hall costume; I was expecting her to go with a character from the anime she likes (Naruto) but she picked this instead, I believe thinking it would be easier.

TIA for any help anyone can give.

EDIT: Would a deep forest green flowy dress with short cap sleeves work? I also found a sleeveless black knit tank dress.

My friends list RAWKS!

Well, today has been an interesting day on several different levels:

I slept in fairly late, even with Jessica here. It was a decent rest. When I woke up, I got an email that changed the course of a number of things - someone (who was making trouble) has removed them self from the equation. It will make life both easier & more complicated.

Jessica had a Girl Scout ice skating party today; I was getting ready to take a shower to go, and slipped & fell in the tub. Scared the HELL out of myself, Tony, & Jessica. (Tony has spent part of the afternoon putting traction things in the tub so no one will slip anymore.) I'm sore where I landed; it could be worse, I didn't hit my head or anything, but my left side (mostly) is sore in the hip, arm, and shoulder. Also my ankle. My right side is a little sore - that's the side that grabbed for the shower curtain to try to balance myself. On the plus side, the shower rod stayed up - well built.

Re: the skating - Jessica had never been skating before. She ended up doing pretty well, overall. Her first few times she wouldn't leave the wall of the rink, but her GS leader helped her, as did her troop mates, and she eventually left the wall holding on to a traffic/safety cone that the rink was letting little ones use to help them stay up. But she didn't fall much, and she was in good spirits & NOT terrified, which pleased me greatly.

Both she & Tony are currently napping. I'm sitting here partially because it's a different position & feels better, and partly to stay awake myself, although I probably *could* nap.

I think I might play a little Scrabble & chill out.