It is a touchy situation.
Not only did someone get bumped, but cystic fibrosis will attack the new lung.
CF is genetic, it is not like Tuberculosis...
And she still has it.
For cystic fibrosis patients, the donated lungs don't contain the defective gene that caused their own lungs to clog so they won't fill with mucus again.
http://www.today.com/health/new-lungs-buy-time-dont-cure-cystic-fibrosis-6C10315364