I think she, herself, has figured out her own method to make the
problem less worse on her. When a
coughing spell occurs, she desperately tries to find a spot in the house, lays down, and appears like she's trying to calm herself down. And she lays there awhile. Just like in previous times, these cough/hack spells still occur when she's excited, eating dogfood, and waking up from deep sleeps. There hasn't been any signs of a white foamy substance in a very long time.