Respected sir, hi sorry to hear about your issue. Vasovagal syndrome is an entity pertaining to body`s response to certain stimuli or insult or neurochemical imbalance. It`s transient phenomena not lasting longer & majority of times prevention is better than cure for it. You have to follow certain casual principles to avoid as much attacks of vasovagal episodes like : *Maintain her hydration all the times by plenty of liquids. *Avoid pressurising her for unnecessary things bothering her. *Make good friendship with her so that even minor issues in her mind also gets conveyed to grandmother first because her mentality is of vital concern all the times. *Help her to engage in her desired activities. *analgesic tablets occasionally for headache not on regular basis. *Give her high protein & iron containing diets. *Convey her to do concentration exercises and YOGA for 30 minutes a day on regular basis which is going to help her on long term basis. * Look out she doesn`t get angry on the issues which will exacerbate issues. Thanks , regards, I hope I have cleared your doubts, still if query would love to assist dear grandmother Bye. take care of your granddaughter to your level best Wishing her fast speedy recovery from the same.