 Los Angeles police stated Hartman 's death was caused by a " domestic discord " between the couple . A friend stated that Brynn allegedly " had trouble controlling her anger ... She got attention by losing her temper . " A neighbor of the Hartmans told a CNN reporter that the couple had been experiencing marital problems : " It 's been building , but I didn 't think it would lead to this " , and actor Steve Guttenberg said they had been " a very happy couple , and they always had the appearance of being well @-@ balanced . " 
