My 4 year old twins have asthma. We have yet to be told the severity - one doc mentioned moderate - severe but this was an a and e doc, not the consultant.
They have just switched to 2 puffs seretide twice a day (previuosly on flixotide), we also have ventolin and atrovent.
prenisolone genereally from a and e / childrens ward etc.
Anyhow, my boys were prem (32 weeks). before I could express enough milk for their first tube feeds, they were tried on formula, which they could not digest. Every time they tried with formula in hospital, they had trouble getting it down them.
One twin was always severely constipated. After the other twin had a major attack last year resulting in cardiac and respiratory arrest we pushed for more allergy tests. They came back as positive for milk, wheat, soya (we already knew about egg and peanut).
So the point of my post is the twin who was always severely constipated changed dramatically after a change in diet. It turned out the wheat allergy was causing it. After a few months we re introduced wheat and the constipation has gone, which apparently can happen with some allergies.
Thinking back, I seem to remember the constipated twin did takea little while to have his first poo and there was a small amount of concern at the time, but then he did it and everyone was happy.
On another point, the twin who had the major attack was running around the surgery, was given a neb and it was at that point he had a cardiac arrest. We now know he do copes so well with his symptoms, it is very difficult to tell when he is in trouble. This year he had an attack and by coincidence was treated by the same doctor who saved his life last year. He refused to treat him in a cubicle and insisted on treatin him in majors as he knows how deceiving he can be. sounds a lot the same as your daughter.
Have you thought about allergy testing?