shayna hubers has been charged with murder in the october 12 , 2012 , of 29-year-old ryan poston inside his condominium in highland heights , ohio .
hubers , who was 21 at the time , claimed she was acting in self-defense because the young attorney was shoving and hitting her , but during an interview with police she was quoted as telling a detective she wanted .
on the first day of testimony tuesday , jurors were shown a video of the defendant 's interview with police following the slaying .