IF she is guilty.
Im by no mean a psychologist but heres my ideas on her personality! I reckon she's been a bit of a loner all of her life for one reason or another, maybe an only child. I reckon she was fully into her studies and her job, and I bet her mum and dad doted on her and were so proud of her. But I reckon she was addicted to the sympathy and attention she was getting when people knew she had interacted with these babies that had passed. The pats on the shoulder, the hugs, the words of comfort, the texts pinging all the time. I reckon she searched the families on Facebook to look at the reaction to what she did. To see if maybe she is mentioned. To see the carnage she had created.
I reckon she revelled in interfering in other people's lives and the control of life over death. I have no idea what would have made her that way. Maybe some trauma in early life? Maybe never fitting in with peers? Not that any of it would be any excuse. Because if she is guilty the only word for her is evil. Iv never heard of such evil in all my life, those poor innocent babies were never given a chance.