That is what you are failing to understand, Cheri. The statistics have already been supplied in this thread, from two separate sources. The news article simply supports the statistics. It is a real life example of what the statistics report.
If you need more than one example to support the statistics, Google is your friend. The newspapers are full of examples.
No, You failed to see that not only teenagers kill their children, adults mothers/fathers also had killed their children too, I'll listed a few.
Patricia Blackmon was 29 years old when she killed her 2-year-old adopted daughter in Dothan, AL in May 1999.
Kenisha Berry at age 20, covered her 4-day-old son with duct tape resulting in his death.
Debra Jean Milke was 25 when she killed her 4-year-old son in Arizona in 1989.
Dora Luz Durenrostro killed her two daughters, age 4 and 9, and her son, age 8, when she was 34 years old in San Jacinto, California in 1994.
Caro Socorro was 42 years old when she killed her three sons, ages 5, 8 and 11, in Santa Rosa Valley, California in 1999.
Susan Eubanks murdered her four sons, ages 4, 6, 7 and 14, in San Marcos, California, in 1996 when she was 33.
Caroline Young was 49 in Haywood, California when she killed her 4-year-old granddaughter and 6-year-old grandson.
Robin Lee Row was 35 years old when she killed her husband, her 10-year-old son and her 8-year-old daughter in Boise, Idaho in 1992.
Michelle Sue Tharp was 29 years old in Burgettstown, Pennsylvania when she killed her 7-year-old daughter.
Should I go on???