Okay, so the follow-up review on the Gary Fisher Cosmo.
The shifting is nice and clean, and she can easily manage it physically. Brakes are good too. The bike as a whole seems pretty solid, and while it's somewhat heavy, it seems consistent with the other children's bikes that are out there. In short, it's a pretty nice ride. I got it for $125, which is a bit high for a used kid's bike (even if it's in great shape), but the quality seems there.
The only downside (relatively minor) is the smallish chainring limits her top-end speed when we're out on the path and she really wants to
GO! ... or maybe that's a benefit. hahaha Anyway, it's not slow, but it could be faster. Oh, and it looks like my girl is instinctively a spinner, not a masher. She'll often drop it down a couple of gears on purpose, pedaling like crazy and maintaining speed.
Here they are. I'd say the bike is worth a look if you're in the intro-to-gears phase with your kiddo.