PLACERVILLE, Calif. - A woman who was kidnapped, raped, and held captive for 18 years was so afraid of her abductors that she never tried to escape, according to court documents released Thursday.

Jaycee Dugard said in testimony to a grand jury that she was zapped with a stun gun while being taken from a South Lake Tahoe street at age 11 and kept under a blanket in a car as she was driven to the home of Phillip and Nancy Garrido.

Dugard said she heard a man laughing as he said, "I can't believe we got away with it."

At his home, Phillip Garrido threatened to use the stun gun on her again and said he had vicious dogs that would attack her if she left the property, she testified.

Dugard was later locked inside a backyard studio without being allowed to leave for an entire year. During later years, she felt helpless because she did not know where she would go if she escaped.

The document was released after the Garridos were sentenced earlier in the day.

Dugard, 31, did not attend the sentencing, saying she refused to "waste another second" in the presence of the married couple she said stole her life.

Phillip Garrido, 60, a serial sex offender, was ordered to spend the rest of his life in prison. His wife, Nancy, 55, was given a decades-long sentence.

"I chose not to be here today because I refuse to waste another second of my life in your presence," Dugard said in a statement read aloud by her mother, the first public comments about her experience since police found her 22 months ago. "As I think of all of those years I am angry because you stole my life and that of my family."

Dugard was abducted by the couple as her stepfather watched her walk toward a school bus in June 1991. She was kept in the backyard compound and gave birth to two daughters, the first when she was 14, fathered by Phillip Garrido.

The couple, dressed in orange jumpsuits, made no eye contact with anyone and kept their heads down as the letter was read.

Phillip Garrido's attorney read a statement on his behalf in court, saying that he agreed with Dugard and did not expect any leniency.