Update: 1:15 p.m.:
Grubb was sentenced Wednesday to a total of 62 years behind bars.
Original Story Below:
A Cabazon mother who molested her three young daughters for years is expected to be sentenced Wednesday to 80 years in prison.
Pamela Jean Grubb, 48, was convicted Sept. 26 of four counts of lewd acts on a child under 14 years old and one count of sexual penetration of a minor with a foreign object, as well as a sentence-enhancing allegation of victimizing multiple children. Jurors took less than three hours to return verdicts in the case.
The woman's youngest daughter, now 15, testified that her mother physically and sexually abused her, telling Riverside County Deputy District Attorney Elan Zekster that she and her two older sisters endured mistreatment at their mother's hands for three to four years before they were finally placed in the sole custody of their father.
Wayne and Pamela Grubb's marriage disintegrated when the latter's schizophrenia grew progressively worse, according to defense attorney Mary Bernal. The couple divorced in 2005.
Their youngest daughter alleged that her mother kissed her breasts and fondled her "privates." She said there were frightening and bizarre incidents involving her mother and unknown men the defendant brought home.
On one occasion, Pamela Grubb forced her youngest and middle daughters to watch her have intercourse with a man while another man held a knife on the two girls, according to testimony.
When Zekster asked why the child didn't immediately reveal the episode to her father -- who had been at work -- the girl replied, "I was scared. I was constantly scared."
The abuse occurred when the girls were between 3 and 15 years old, according to court papers. Grubb's oldest daughter is now 22, and her second child is 17.
The eldest child said she was forced to watch pornographic films with her sisters and perform "sexual massages" for the benefit of the defendant. The middle daughter testified that when she was less than 10 years old, her mother inserted a tampon in her while she was trying to sleep.
According to court records, Grubb was briefly treated for mental instability at Patton State Hospital in 2010 but was later deemed to be competent to stand trial.
Grubb is currently housed at the Robert Presley Detention Center in downtown Riverside.