THE GREATEST STRUGGLE.
Well, what you have so far looks great.
Hmm...
Well, the background I figure kinda HAS to be nature-y or it'd feel out of place...
The only thing I could think of is maybe she's leaning on a tree covered in the same kind of ivy maybe?

I like HowlingZero's idea! :D I have always hated doing backgrounds unless its with actual paint :P

i was thinking mossy woods, like my woods outback.

Maybe underneath a willow or something? I dunno, I'm not very helpful with this sort of stuff. XD

Have I seen my trailer? Yes. We haven't finished recording yet so I can't tell you EVERY reason it's rated R yet, but I'm thinking mostly violence gore crude humor and hopefully no cgi nudity. Or real nudity.

Have you played my game? Probably not if you can't watch R movies. The cutscenes are still hilarious, and they're all over youtube. I'll post a link in an online comment. It's the next best thing to the movie at the moment.

A garden with glowing butterflies!!!

Yeah woods. Spanish moss, fungi, leaves, and roots.

Yeah you won't like the game then. Probably would still enjoy the episode of "ultimate spiderman" that I took over. I couldn't even say the k-word it was so clean.

http://youtu.be/njgqALr080U

that guy keeps cutting up all my trees.

A forest with moss and similar looking ivy and trees in a similar shade of brown to her hair. Also, make the trees tilted at the same angle too, with sunlight shining through and some hitting her head and shoulders. At least that's my suggestion.