Love to hear how it turns out. Mine is 8 and about 45 pounds. I have been agonizing over where to start her out. I am down to trying to find a Savage Cub and can't manage to get near one. She is a righty so I don't have the stock and bolt issue.
I didn't care much for the trigger on the Cricket or Chipmunk, but other than that, I am happy to see someone is paying attention. The Henrey Mini Bolt will not take a scope, but looked decent. Don't think that was offered in lefty.
Marlin started to make the T 2000 and Anschutz made the Achiever, but both have been discontinued. I looked long and hard at the SHOT show last year, but I didn't have my daughter with me, so what may have looked good to me at the time didn't turn out to be small enough when the kid got involved. The Henrey Youth Lever comes close, as do several automatics, but only if you are ready to either cut down or make a stock. Even most airguns are too long in the pull. There should be more attention paid to little girls who want to shoot, but other than Eley ammo folks, not many companies are supportive.
Let me know how it turns out and I will do likewise. I am going to have an R7 stock cut down and I am going to have peep sights put on. It should be a decent alternative to the old Red Ryder with a sawn-off stock. When she gets that down, I'll let her get a taste of a scope and more distance.
Good Luck,
Dino