Dangerously Ill

This short story is based on a young man and his "imaginary friend." Aurel is a young man who grew up with an imaginary friend he calls Willy. The story goes into detail about these to characters. One, an intelligent young man, and the other an unintelligent young man. But in the mix of things she pops out of the blue. What was this woman's intentions? Was it to help then or inflict great pain on them?