I used to volunteer at a shelter and have heard a few tips that might help. I recently have had to do the below things to stop my 2 year old from picking up the cats. They have been around her entire life, but she recently realized that she's bigger and can carry them!
It took about two full days and sometimes I see her tempted to pick them up still, but she refrains...
Well, you dont want your dog to feel like he has to defend himself. So, I think maybe for a few days you'll have to "take a vacation from everything else" lol - and just focus on them two. Like, when she does stuff like that, dont even tell her what to do, dont give her a warning. When she acts looney around him, go straight to her and remove her from the situation. While you carry her away or remove her from the situation, calmly say "No pulling the dog." or whatever she is doing.
She will probably go a bit loonier in protest... but after a while, it wont even be worth it to her to attempt to harass the dog because she wont be able to get away with it even once - whereas just saying something usually lets them finish the behavior at least once.
Then, maybe consider giving her the sole responsibility of feeding the dog to her. So the dog does see that she is ABOVE him and while she feeds and waters the dog, you can sweetly talk about how the dog is like our new baby. How the dog depends and trusts us to care for him and love him and make him feel safe. He loves to be talked to sweetly and touched gently and he sure does love her to feed him.
Im sure you've tried these things, but I think immediately removing her from the situation without a direction to do so for a few days might do the trick.
I know my four year neice is a bit rambunctious and she will block out her moms voice just long enough for her to hurry up and finish the behavior before she darts away... still having done it, yknow?
Best of luck!! Eventually the novelty of the dog will wear off, but I hope you can start their relationship off to a good start so the dog doesnt "learn" how he treats and interacts with her to be needed in a defensive way.