Erika Sandoval pleaded not-guilty to the murder of her ex-husband on Tuesday.
The Tulare County District Attorney said Sandoval was laying in wait inside her ex-husband's home before she killed him. If convicted, she could face a life sentence without the possibility of parole.
Sandoval is the main suspect in his death and the mother to his 2-year-old child. According to divorce papers, they had their son after their divorce in 2012.
In court documents, Green described his ex-wife as an unpredictable person with extreme anger issues. In those same papers, Green accuses his former wife of stealing a gun, which went missing from his home during a heated argument. But Sandoval denied those claims, and in a text message she sent to Green she says he was the abusive one and used his position of authority to intimidate her.
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