If you've genuinely only had one question about a badge book, and you've only raised one concern, then, yes, I agree, the leader could have been a bit more forthcoming. But to be fair to other posters, from your original post, it does come across as you being fairly pushy, sending lots of emails that the leader hasn't answered etc.
If you've only sent one email, then perhaps the leader has missed it/overlooked it. I admit that, as a cub leader, I've forgotten to respond to an email on occasion. I do get quite a few from parents - which is fine, but it's easy to miss one. If you need to talk to the leader, the best time to do this, in my experience, is at the end of the meeting, when the rest of the children have gone home. It's generally too busy at the beginning of a meeting, and there's no time for a proper chat.
At the end of the day, if you don't like how the leader is running the group, then it's probably time to move on. The leader is just a volunteer trying to do their best after all, and will be giving as much time and energy as she is willing to give. Perhaps that's not enough to run the group to its full potential, or perhaps you are have unrealistic expectations, it's hard to tell from what you have posted.
It might be worth moving groups, or trying Beavers if there are spaces available. However, leaders will vary from group to group, just as they do in Guiding. Perhaps ask other parents at school what groups their children go to, try to get recommendations. Or just asking your DD if she still wants to attend - perhaps it's just not her thing any more.