
Thanks everyone for your replies.
We've tried non dairy, made no difference at all to her. We've cut down the amount of dairy anyway as a precaution. Also took the wheat out of her diet for 4 months, no change :-(
We don't have carpets, the house is made of wood so dust is an issue. We've just decided to buy the special mattress cover (any suggestions to the best one would be great please) Windows open, damp flannels done too.
Only one air freshener, that'll have to go. Not the dogs (both breeds in the house are non-moulting (TT & SWD) so would be very surprised if it's them). Cat is banned from kids bedrooms & doors are always shut for that reason.
When she was little she used to be sick when she coughed to much, but I'm sure it sounds more like someone's "dotty throat" - i like that :-)
Have informed her TA at school & my daughter to see if the bubbling sick occurs at school or whether it's just at night. Have to say, we're back at the doctors in a fortnight anyway to review the results of using the spray. At least my doctor has said if it doesn't improve her breathing by 15% then she won't be put on it long term.
Thanks again, knew I could rely on you lot :-D