First off - I have to say how happy I am to hear that you recovered Emma. I read about your loss in several different places as well! As I've said before the parrot community, at least the community that is closely involved with their birds, seems very close-knit and it is a shame if anyone tries to divide such a community.
I've always felt that parrots are far more resilient to changes in temperature than we give them credit for. I've never worried about draughts and the like with my birds. It is sooo great to hear that she is back! She must have had a great adventure!!
That's all I've ever done with my birds as well - but it has served me well in the past. I guess, should I decide to get a grey, I should be doubly careful about the environment and the chances for escape... I read somewhere, once... I kind-of forget where... But someone said something like, "after owning conures for a while I decide I would get a grey. After all, how different could they be?
Very. very. different".
It's stuck in my mind...