It's been a couple days already it looks like, but hopefully your daughter is calmed down and you have kept them separate. You are going to need to obedience train the retriever. It doesn't have to be formal class training but has to be structured regular training. The following site is helpful in helping owners train their dog. Be sure and click on the link to the page on obedience at the bottom. and links on subsequent pages leading to detailed instructions.
Training works best if you train at least 30 minutes a day (two 15 minute sessions). I would start making your dog work via the Nothing in life is free program (NILF). It is outlined below.
In addition, keep a leash on her and each time she reacts to your daughter whether it is barking, growling, lunging, even staring, give her a tug on the leash to break her attention and a firm low toned NO of reprimand. You should also get a basket muzzle for her to wear anytime children are around her or strangers. That prevents any bites from occurring until she is under control.
As soon as she isn't reacting to your daughter in that manner anymore, you should have your daughter start training her as well. Start this after you have taught your dog basic commands like sit and down. Your daughter can help by going over these commands 4-5 times in a row and when te dog obeys, she can toss her a tasty hot dog sliver for a treat. As she obeys your daughter, it will make her a little more submissive toward your daughter even if she does it for the treat. Dogs do not reprimand or show aggression to dogs to those they see as more dominant and the bosses. Don't use boring store bought treats.