By Jim Melwert

NORTH WALES, Pa. (CBS) — A North Wales woman pleads guilty to murdering her ex-husband, in what her attorney says was the result of years of abuse.

Sixty-four-year-old Hsui-Chin Lin pleaded guilty to 3rd degree murder for the shooting of her husband, Chien-Kuo Lin. With the negotiated plea, Lin will serve 7.5-20 years in prison, and avoids the possibility of life in prison with a 1st degree murder conviction.

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Her attorney John McMahon says, “I think that the plea agreement takes into consideration really what was a lot of strong evidence that my client had suffered significant physical and sexual abuse over many years by her ex-husband.”

At Lin’s preliminary hearing, prosecutors argued the killing was pre-meditated, that she intended to kill her husband because he had cut her out of the family business and was living with another woman.

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Last May, he came to the home to collect some belongings, after an argument, she went upstairs, got the recently purchased gun and shot her ex-husband.