jennifer hoffman and her ex - husband , michael hoffman , said the verdict is " vindication " for their son , whose actions and lifestyle were called into question through layne 's testimony .
it 's really hard to comprehend that your own mother could do something like this to your own child , " she told reporters . "
the 75 - year - old detroit - area woman was convicted of second - degree murder on tuesday , march ... ( associated press ) sandra layne , of west bloomfield township , was found guilty tuesday of second - degree murder in death of her 17 - year - old grandson jonathan hoffman last may 18 .
defense attorney jerome sabbota said layne had offered to take in jonathan hoffman told the dispatcher .
layne wept quietly as the verdict was read at the end of the first full day of jury deliberations .
jennifer hoffman called her mother a " monster . "
as she was being led out of court , her wrists handcuffed to a chain around her midsection , some family members sitting with her 87 - year - old husband , fred , waved in a show of support .
defendant sandra layne shot him again � this time in the stomach .
layne fired 10 shots , striking hoffman six times .