By dying the virus would die with her. Here is another female Christ type, so popular in film today. In a famous scene in 'Close Encounters' a little boy opens his front door to investigate the light from an alien spaceship just outside the door. Spielberg was inviting the audience to explore spirituality. And, to not fear it.
Heroes now jump toward the light on a regular basis now.
Doves are a standard in John Woo films. I am a Christian. Doves represent the purity of love, beauty. Also the dove is a messenger between people and God. Ride 'em cowboy.