45-year-old father of two, steven forsyth. roberts, in his hockey-style facemask and load-bearing vest, continued shooting into the lower level mall courtyard, wounding 15-year-old kristina shevkenko. she s still in serious condition. we are optimistic about her eventual recovery. reporter: roberts then killed himself near jcpenneys. what was behind his mission is still a mystery. roberts ex-girlfriend hannah exclusively told abc news that he had quit his job, sold all of his belongings, and was moving to hawaii. this is the last thing i ever expected, especially from him. he was just too sweet. he was never mean to anybody. reporter: tammy roberts, roberts aunt who raised him, also has no answers. she has no understanding or explanation for her son s behavior. she s very sad and wants everyone to know she s so sorry what jake did and it s so out of his character. reporter: sunny hostin, abc