SAN JOSE (CBS/AP) – Thomas Kinkade’s widow and girlfriend have taken their dispute over the late painter’s estate to court.

Amy Pinto-Walsh was living with Kinkade and found his body when he overdosed on alcohol and Valium in April. She asked a Northern California judge on Tuesday to allow arguments over the artist’s contested will to be heard in open probate court.

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Lawyers for Kinkade’s wife of 30 years, Nanette Kinkade, want the terms to be decided in secret binding arbitration.

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Pinto-Walsh has submitted handwritten notes allegedly written by Kinkade bequeathing her his mansion in Monte Sereno and $10 million to establish a museum of his paintings there.

A July 2 hearing is scheduled to determine the veracity of the notes.

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