Schenecker admitted that she hit Calyx, 16, in the face for "being disrespectful" to her in the car in November, but authorities determined Schenecker posed little danger to Calyx or her 13-year-old brother Beau.
"The overall risk to the children at this time is low," reads a Florida Department of Children and Families report dated Dec. 23, 2010. "The mother and child have not been in any other altercations and the two have agreed to disagree."
Last week, Schenecker, 50, of Tampa, Fla., admitted to killing her children – first shooting Beau twice in the head for "talking back" while driving him to soccer practice, then driving home and shooting her daughter in the face, police say. She is being held without bail after making a court appearance Monday.
The explanation she gave police was that the teens were being "mouthy." "She described the crimes in detail," police spokeswoman Laura McElroy says. "That was the only reason she provided to our detectives."
According to the reports of last year, Schenecker was in individual and family counseling and had the full support of her husband, U.S. Army Col. Parker Schenecker, 48, as well as friends and family.
The family's therapist had reported to authorities that counseling was going well. Says the report: "She has no safety concerns for the family."
Reporting by JEFF TRUESDELL and STEVE HELLING