An Alabama woman who blamed the death of her infant son on her toddler daughter has been sentenced in Pennsylvania to 15 to 30 years in prison.

Thirty-two-year-old Wendi Stanford, of Florence, wept in Lehigh County court Tuesday as she again professed her innocence in the November 2003 death of 2-month-old Christopher Harbin, in Allentown. She called herself "a mother who has suffered, not a violent monster."

But a judge imposed the maximum term, saying he was disturbed that she blamed another child.

An autopsy concluded that Christopher died from a skull fracture. Prosecutors allege she shook Christopher and banged his head against furniture.

Stanford claimed her daughter knocked Christopher out of a swing.

She was convicted in January of third-degree murder and child endangerment.

Her attorney plans to appeal.