Washington PostEx-girlfriend testifies Mazzaglia murdered MarriottFoster's Daily DemocratDOVER — Kathryn "Kat" McDonough, Seth Mazzaglia's ex-girlfriend, took the witness stand at Strafford County Superior Court Tuesday morning. Just after 9 a.m., she told a courthouse filled with Elizabeth "Lizzi" Marriott's family, friend and members of the ...Woman: I saw my ex-boyfriend strangle coedWREX-TVWoman: I watched my ex-boyfriend strangle Lizzi MarriottWorcester Telegramall 91 news articles »