proctors are great if you have a cough especially on stage or if your singing or something because ones you suck off the sugar they comfortably stick to the roof of your mouth and when you swallow it soothes your throat! problem solved... x
Nothing helps an asthmatic cough other than ventolin and possibly steam.
Hope she is feeling better. I gave up ballroom & Latin dance classes at the age of 12 because of asthma (missed exams due to attacks and not allowed to progress with my peers unless I took them)