Hello there. I am not a parent, but I do know exactly what you're daughter is going through. I am 22 years old, and I am going through the exact same thing as she is. As I can not imagine going through it at the age that she is at, I can say that I understand it all completely. A little too well. I have been sick for the past 2 years, visited numerous doctors but get no answers. I have been told that there is nothing wrong with me. That it's just stress and anxiety and I used to walk out of the doctor's office disappointed and disheartened. Why wouldn't anybody listen to me? I have had this heart condition for awhile and because of it, I suffer from constant fainting, fast heart rate, weakness, stopping of the heart, and shortness of breath.
Last Thursday, I had my first heart ablation procedure with failed attempt. I was awake for the whole thing and I remember everything. In all honesty-it was the worst thing that I have ever gone through in my life. Very traumatic. (I hope that they put your daughter to sleep while they did this procedure on her) They sped up my heart rate from 80 bpm to 250bpm in a matter of seconds. When they tried going into my second lower quadrant of my heart, the catheter was blocked. (which makes no sense since my echocardiogram came back clear and normal just two weeks prior to the procedure) when the doctor came to my room after recovery, he told me that it was a failed procedure. That I went into A-Fib twice but they couldn't get the SVT rhythm that he had been trying for. He didn't tell me much after that. He told me to come back in a month from now and to discuss further treatment, which in my case, will probably be a pace maker. (I hope your daughter will be cured from SVT before the discussion of a PM is even discussed!)
That is just a piece of what I am going through. I get it. It sucks and I understand completely what both you and your daughter are going through. Do not give up. and don't take "no" for an answer. You got this mamma. And so does she. She is a strong young girl! Prayers for you both