
Oh Karen I'm so sorry to hear about Chelsea. I have a Chihuahua Long Coat here who was such a noisy breather that she worried me. (Her bark is like a budgie with hiccups.)
My vet diagnosed everted laryngeal saccules - whatever that may be. He said that he would remove them but it turned out to be a difficult thing to do. By the time he got a tiny camera in, he inserted scissors only to find that, if he opened them, he was likely to damage the vocal cords. So he did what he could. With those snatchy things (the one where they take biopsies by snatching) he was able to take bits away. I'm sure that he explained it to me in a rather more veterinary way.

She is still very noisy if I'm honest, but he didn't have a lot of room. Looking at the breed I'm surprised there is room to do anything much. As your girl isn't old, do you think that you might opt for surgery once she has got over the chest infection?