explore the fact that maybe they were romantically involved, shelley and ashley, because the degree of injury that that poor girl suffered, as i stated, it's personal, which is a lot of pent up rage. >> reporter: somethin' like a lover would do. a spurned lover-- >> absolutely. yes, sir. that's correct. >> reporter: and she could well have been that spurned lover? >> oh yes. yes. she sure could have. without a doubt. >> reporter: ashley told the detective she discovered the murder after the school sent her home to check on shelley. said she knocked on shelley's closed bedroom door, got no response -- and then entered the room. >> i saw her feet and she wasn't moving. so i turned on the light, and said "hey, shelley, are you okay? she wasn't moving?" so i went in and i shook her in her bed -- >> was she covered up? >> originally the blanket was on her -- >> and you shake her -- with her blanket over her. >> yes, sir. >> and you shake her and she don't wake up. you pull the cover off of her and you shake her again? >> i saw the blood and --and i