( CNN ) -- The defense attorney appointed to represent an Alabama professor accused of shooting her colleagues said Friday he regrets describing her as `` wacko . '' But at a news conference , Roy Miller said `` something 's wrong with this lady . '' He also said his client , Amy Bishop , is `` aware of what she 's done and she 's very sorry for it . '' Bishop is under suicide watch in jail , Miller said . In an interview Thursday with CNN affiliate WHNT after visiting Bishop , Miller said , `` I just think the case speaks for itself . '' He added , `` I think she 's wacko . '' At Friday 's news conference , he referred to that remark . `` Good lord , y'all , '' Miller said . `` Listen , I went overboard with that . When I talk to y'all I make statements ... I wish I had n't have made . And probably that 's one of them . '' He added that he was trying to imply that the facts of the case `` speak for themselves . '' Bishop told him she does not remember the incident , Miller said . But now , `` she knows she 's killed some folks , I 'm sure . '' The biology professor is charged with capital murder and three counts of attempted murder in the shootings at the University of Alabama in Huntsville last week . At the end of a biology department faculty meeting at the University of Alabama in Huntsville , Bishop suddenly `` just stood up and shot , '' a professor who survived the incident told CNN affiliate WAAY . Three of Bishop 's colleagues were killed ; three others were wounded . Bishop , a Harvard-trained geneticist , had recently been denied tenure . Bishop , a professor and researcher at the university , was arrested as she was leaving the building . A 9 mm handgun was found inside , on the second floor . A university spokesman , Ray Garner , identified the dead as Gopi Podila , chairman of the biological sciences department ; Maria Davis , associate professor of biology ; and Adriel Johnson , associate professor of biology . Miller said his client is `` trying to keep from cracking up down there emotionally , '' and is worried that if she breaks down , officials in the jail might think she 's going to commit suicide . Discussing his client 's mind , he said that doctors of biology `` have got , in my estimation , high IQs -- and the high IQ in my opinion is sometimes not good for people . '' He said Bishop sometimes is `` so focused on the mental basis '' that she `` does not know what 's going on around her . '' He said he believes the case will boil down to Bishop 's mental state at the time of the killings . In the wake of the shootings , information came to light about previous run-ins with the law Bishop had . She faced criminal charges after an altercation at a Massachusetts restaurant nearly eight years ago , police said . The police report says Bishop became furious that there was no booster seat available for her child , began screaming at the woman who had taken the last one and struck her in the head . Authorities previously have said Bishop , who is also known as Amy Bishop Anderson , fatally shot her brother in the family 's Braintree , Massachusetts , home in 1986 . The shooting was ruled accidental , but after a review of the incident after the Alabama shootings , Norfolk County District Attorney William Keating issued a statement saying that probable cause had existed in 1986 to charge Bishop with assault with a dangerous weapon , carrying a dangerous weapon and unlawful possession of ammunition . However , the statute of limitations on those charges has expired , as well as on a potential charge of `` wanton and reckless conduct '' -- the lowest standard for manslaughter in Massachusetts , Keating said . In addition , the Boston Globe reported Monday that Bishop and her husband , Jim Anderson , were questioned in the 1993 attempted mail bombing of a Harvard Medical School professor . Jim Anderson said on Monday that federal investigators had gathered `` a dozen subjects '' in the attempted bombing , but `` there were never any suspects . Never anyone charged , never anyone arrested . Then five years later , we got a letter from the ATF saying , 'You are in the clear . ' ``
There 's ` ` something wrong with this lady , '' attorney John Miller says . Miller told reporters he regrets calling ' her ' ` ` wacko '' is charged with involvement in killings of three University of Alabama colleagues . She allegedly opened fire at a meeting last week .