The voices of Amy Bishop’s parents were heard in court documents for the first time as they both took the stand in 2010 to defend their daughter, insisiting that she fatally shot her brother Seth in the family’s Braintree home by accident in 1986, after being traumatized the year before by a burglary in the house. Samuel Bishop, her father, testified in April 2010 that Amy “was sitting in that Victorian house, that big house by herself for close to two and a half hours [before the shooting] and she was afraid,’’ according to a redacted transcript of the 2010 inquest obtained by the Globe last night, after the newspaper successfully sued for its release.