Hey Chromefish,

Not exactly an answer to your request, but since I don't know of any lefty rifles available....

Have you considered the NEF Handi-Rifle?

It's single shot, built to last, relatively light, comes in a wide variety of calibers so you can get what you're after, and last I checked they were only about $200 new. They even come in youth size in some nice calibers if your daughter is smaller/younger.

I think they're a neat little rifle for the money.

Good luck.