Did they tell her anything about caffeine? Caffeine can be a big trigger for Meniere's. But, it can also be funny. I cannot have it in either coffee or soda, but it doesn't bother me in chocolate or tea.
If she's around anyone that smokes, that can also trigger an attack.
Chinese food can trigger an attack, I'm not sure if it's due to the salt or something else (like msg?) in soy sauce.
I know she's too young to drink, but for when she gets older, that's something that she needs to consider. Alcohol can also affect people w/Meniere's.
Strobe lights and even going to fast in a vehicle can trigger an attack.
If she has a vertigo attack, tell her to find an object that is not moving and stare at it. That's not as easy as it sounds. And, she may need to work some on figuring out how close the object should be. Some people do better w/an object that closer, others w/one farther away. Also, if she's interested in any activity that requires balance, encourage her to participate in it, whether it's horseback riding, biking, karate or whatever. I did karate for 8 years. And, while I couldn't really do spinning kicks, I was able to get to 2nd degree black belt. I only stopped because I didn't have the time.
I'm glad she's getting the allergy shots. That's one thing that can be a big help. Hope if she wasn't told any of the above that some of it will help her.
I just heard about this today. And, this is why my kids talked to people w/service dogs. I didn't want them behaving like these people.
http://www.nj.com/cumberland/index.ssf/2012/07/patrick_stark_plans_on_taking.html