Her color looks good. Is there any sign of the comb going dark on the edges? As long as the comb stays red, she's getting enough oxygen.
But she might breathe more comfortably if she had a cool mist vaporizer or mister moistening the air she breathes. It will thin the mucous out so it drains instead of gluing itself to her respiratory system. If you have some Oxine or Betadine, some in the vaporizer can also help fight bacteria in her mucous membranes. Set the machine up to blow mist over her so she's breathing the droplets.
Call the vet and ask to have the anti-inflammatory renewed. That can help keep her membranes from swelling and it will make sure she can still breathe well enough.
It's more likely her noisy breathing is caused by mucous, not something stuck in her airway. Usually, a stuck foreign object will work its way out in just a day.
If this is a chronic respiratory disease, she will just need to hang in there until it runs its course. But if this mucous is a secondary symptom of a failing heart, that's a different story. The vet should probably reassess her and listen to what her heart is doing.