While it is unclear what Fredricka Rosa 's motive was , Edwards believes it may have been connected to abuse that Valpa Rosa reportedly inflicted on his family . A judge dismissed the charges against Fredricka Rosa , 78 , in her mother 's death . She had been diagnosed with dementia and was deemed unfit to stand trial . She is believed to have used one of four guns that were kept in the home .
A judge dismissed the charges against Fredricka Rosa , 78 , in her mother 's death . She had been diagnosed with dementia and was deemed unfit to stand trial . She is believed to have used one of four guns that were kept in the home .