It's a terrible situation for the woman, but committing murder will turn her from a victim of the kingdom of darkness to one of their agents. It will damage her eternally--unless she repents--, emotionally, morally, probably physically; it kills the most helpless and innocent; it empowers Satan's kingdom; and, unless she takes the life without anyone's assistance, she's bringing a second individual or more into the act, and somebody's going to be working to pay them.