You might want to bring her back in and make sure you've been giving the shots correctly.

Typically, the external symptoms (wheezing, musuc, bubbles) are gone after the 2nd shot or so and the remaining shots are just to keep the remaining bacteria from building a resistance to the anti-biotic.

Although, for severe cases, sometimes it takes 7, sometimes 9, sometimes more (at least with enroflaxin). Keeping temps high during the shots is important as well.

-adam