that she could have been helped, so that it didn't end tragically. >> and they are still trying to figure out what exactly happened there. eagerly awaiting the results of the investigation, which is obviously still ongoing, wolf. we'll air it later on anderson cooper 306. let's bring in jeff garr deer, who is joining us now. when you hear what the sisters are saying, the reports about the medications, the prescriptions found, what goes through your mind? >> well, certainly we know postpartum psychosis, which appears to be what she was experiencing, may have been a graduation from the postpartum depression. yes, we do treat with antipsychotic medication, along with antidepressants. they're saying, and i totally believe them, that she didn't act in a psychotic manner all the time, but yet it doesn't