In terms of the release of the top hand, I'm fine either way as long as the hitter hits "behind the ball". Consider going with what feels best from Meg's viewpoint here.
Thanks for the input. Will talk to her tonite at practice and see which see tends to prefer. She seems to get more extension in the first video and doing a frame by frame look, the ball is definitely gone way before she lets go. In looking at the Model Swings thread, many of those that release the top hand tend to do it later in the swing. But then again, she has only been doing this for maybe a month? I suppose what I should do is just keep tabs on the release point (if she prefers that style), and hope as she gets more live pitching this spring that she tends to hold on longer instead of releasing too soon.