I believe that the disease runs it’s course in about 21 days. If she survives she should no longer be communicable by then.
Yes, and the clock for others contracting it from her should continue for 21 more days.
Viruses are forever.
Ebola survivors are carriers and can transmit the disease for up to two months after their recovery, specifically by sexual contact. There have been a number of well-documented cases where this has happened.
Survivors will be justifiably avoided by the uninfected. On the other hand, they will be preferred as health care givers, since they will be at minimal risk for the disease.
She should be at her most infectious now if the disease is running its normal course. Last I heard, her health was declining and she needed a respirator. This is when she would have the highest virus density in body fluids and would thus be the most contagious.