The shooting happened Wednesday morning at a home in the 1800 block of Carlisle Court in Schaumburg, police said.
Schaumburg man Daniel Garcia is now charged with involuntary manslaughter.
Police say Garcia's relative, 50-year-old Kellie Barnett, was staying at his home in Schaumburg when he woke up Christmas morning and fired a gun at her.
Garcia appeared in court Friday for a detention hearing.
No further information was immediately available.