If big brother shows complete tolerance of this kind of play, I wouldn't worry about it. Little Zoe is still a puppy, right.... and puppies get away with murder with most adult dogs....for a time. Can you tell if big brother likes her? If he isn't correcting her himself, I wouldn't worry about it. Dogs do play like this, even as adults. So, if he likes her, he probably doesn't mind. Plus, bulldogs are tough that way. Just keep an eye out to see if he seems bothered by it. He'll let her know with a little growl or quick turn of the head, like he's telling her off. Most times, dogs that like each other can handle these things so they don't turn into a problem. So, your question, what can you do to "correct" her.....don't. Correcting, if it's any kind of punishment will only serve to create a negative association with the other dog. If the other dog seems bothered and he doesn't seem to do anything about it, if you feel better about it, you can always distract Zoe and give her another thing to do. Maybe she needs a walk or some romping with you outside. You might want to google something about dog body language...see some pictures and read some descriptions. It mostly comes with experience, but those educational things can surely help. It sounds like you're not recognizing what the dogs intentions are or how they may be feeling.
If the soft toys are being chewed up and torn to pieces, you need to watch that those pieces don't get ingested by the dogs. Otherwise, supervised, they might work out fine. I generally stick to Nyla bones or other hard toys.
Vets have a very limited course on behavior. Unless it is a veterinary behaviorist, I wouldn't give .02 to the advice on behavior. They know medicine and should stick to just medicine.
Tug is a perfectly good game for dogs and in fact, they play it with each other. Tug does not teach opposition, as some people who don't know anything about dog behavior suggest. It is a cooperative "killing" game where two pals are tearing apart a "carcass" together, like wild dogs do in nature. They cooperate to kill and dissect prey. Tug must come with rules, however, just like any game. My rules are as follows: No jumping up to grab the tug toy out of my hand uninvited. No touching teeth on my skin, even by accident or game is over immediately with another try in a minute or so. Only one toy is used for the game.
And first and foremost, the "GIVE" command must be thoroughly taught first. So, trading a variety of toys or other objects for a higher value treat or toy and giving back the initial item helps teach the pup that it's fun to give up his stuff. Make it a fun game. When you hold the treat in front of his nose and he drops the thing he has into your hand, insert the cue, "give." Then furnish the treat. Then give back the thing he had ("take") and repeat. Toss the toy for him now and then to retrieve and coax him to bring it back, give a treat, toss it again.
After about 3 or 4 times, stop showing him the treat first. As your cue word, "give" starts to be associated with the act of giving, you use the treat as a reward, not a prompt anymore. This is important so the dog doesn't get dependent on seeing the treat in order to give you things.
Then take the toy or rope you're going to use for the game of tug and play the give and take game with that. Then start playing a little tug with it. Let him win lots of times. But sometimes stop and ask him to give it to you. Then play some more. Once learned, he must give the toy immediately when you give the cue, "Give." If he does not, the game ends. Try again in another 30 seconds or a minute. If he resists, repeat. If you're consistent, he'll learn the rules. I have played tug with all my dogs. It's fun. They play it with each other. And it builds confidence when they get to win. A confident dog is a much safer dog.
