Ms. WM, I do feel for you and your seizures. I have had to deal with student having seizures over the years and I learned early on not even to put anything into the mouth, just try and get the head turned to the side. In your case, your doctor, family members, etc., know about them.
In this case, the fainting aspect gives my hinky meter a budge. Lina's mother testified rather cavilierly about them, saying, "It was just Lina." I truly wonder if she had as many fainting spells as Mom said. I have a sneaking suspicion and, IMHO, a doctor found a spot in the tissues which could be due to myocarditis and ran with it as a plausible scenario. Mom, fearful of losing contact with her grandchildren, may have gone along. Again, JMHO
Also, if Lina suffered from heart disease, why is it she literally sailed through surgery without any warning signs? Why did everyone in the family say she had no medical conditions and didn't mention regular fainting spells???