hello and welcome to health care magic,
It seems baffling to say the least but in any case you need to understand that medicine and our body is always a mystery and its never maths to get an accurate result.
Having said this I would assume some amount of soreness in the throat as she has been suffering so much. You can give her an anti reflux medication
in consultation with your treating doctor.
You must also consult an good infectious disease specialist and also place your question in the infectious disease section of our website so that further clue to the problem facing your daughter can be found out
hope this helps
Dr Sriram nathan