Richard J. Johnson
Joystick Member
Not just that (spoiler, highlight to read) ...
They explicitly stated in the film that she represented his guilt over her death, that was the source of her hostility towards his endeavors, he was punishing himself as his agent for his feeling of responsibility over the death. Projections are generally only hostile from someone else's dream. Remember the projections bum rushed Ellen Page but would not harm DiCaprio in his dream. So since she was his projection she wouldn't harm him just because she sensed a glitch in the matrix (cough) I mean irregularity in reality / dream state. But she was a more specific projection, a "guilt projection" that tried to punish him.
another great take on it.