So here's the thing: your rooster isn't broken, and you're not a bad chicken parent. He's a teenager with a full tank of hormones and a brand-new driver's license, and right now he thinks the whole garden is his pickup truck. The good news is that this kind of behavior usually settles down once the flock hierarchy gets re-established and he realizes your daughter isn't a rival hen or a threat. The bad news is that "usually" doesn't mean "always," and you've already got a kid with torn tights and a bird who's willing to go through you to get to her. That's not a phase you wait out with your fingers crossed. That's a line.
We've seen this story before, and it rarely ends with the rooster becoming a gentleman. When a bird flies across the garden feet-first at a person, he's not being playful. He's treating your daughter like a competitor, and once that switch flips, it can get worse before it gets better. You mentioned he's never shown aggression before, which is a good sign, but it also means he's learning that this behavior gets a reaction. Every time he charges and you or your daughter respond, he's getting feedback. If you're revamping the coop anyway, that's your window to reset his expectations. Keep him confined for a few days, let the hens have some space from his advances, and see if he calms down once he's not running the whole free-range show. If he still tries to launch himself at your daughter from across the yard after that, then yes, you start looking at soup recipes. Not because you're cruel, but because a rooster who attacks people isn't a pet, he's a liability.
And we get it, because this is the exact kind of fowl play that makes people swear off roosters forever. We've covered the heartbreak of losing hens to a bobcat and the chaos of mis-sexed chicks, and the common thread is that chickens are never as simple as they look. They're not just feathered friends; they're tiny dinosaurs with opinions. This rooster has an opinion about your daughter, and it's not a nice one. The practical move here is to treat his behavior as a training problem, not a personality flaw. Carry a broom or a spray bottle when you're in the yard. If he charges, don't kick him, scoop him up and carry him around under your arm for a few minutes. It sounds ridiculous, but it works. It resets his brain from "attack" to "this is awkward and I want down." If that doesn't change his tune within a week, then the soup pot is justified.
The real question you need to answer isn't whether he'll settle down. It's whether you can trust him around your daughter before he does. You can't un-ring that bell. So here's your concrete next step: finish the coop revamp, keep him confined for at least a week, and during that time, have your daughter be the one to bring him treats through the wire. Let him associate her with good things, not as something to chase. If he still tries to fly at her after that, you know exactly what to do. And honestly, there's no shame in choosing the soup route. Some chickens are just meant to be dinner, not roommates.