She’s now 51, well past-child bearing age. She spent yet another Mothers’ Day alone, with no one to visit her, other than her attorneys, family and former husband.

She is probably the most-hated woman that killed her children since Susan Smith.

15 years ago, Andrea Yeats put the city of Houston on the map for the wrong reasons. 15 years ago, a trial took place in the Harris County Courthouse in downtown Houston for the murder of her four children by drowning them in the bathtub.

Houstonians thought they got the justice that they sought when the jury found her guilty of the four murders and sentenced to life. That was not the case. She got the sentence overturned on appeal and got a new trial in 2006 and with that trial, she was found not guilty by reason of insanity (some states call it mental defect) and sent to a Texas mental hospital, where to this day she remains.

Was it post-partum depression that she suffered from as the result of having four children so close in time? Those could have been factors in the deaths of her children, with the oldest being only 7 and the youngest barely able to walk at the time of their deaths. She could also have been driven to suicide, which could have resulted in the murders.

In an article published in People Magazine Monday, Wendell Odom, who was her attorney in both trials told the magazine, “I don’t think people understand how shy and reclusive and how afraid Andrea is, especially since all this publicity descended on her. She is truly afraid.”

Her former husband Rusty told Time magazine and the Houston Chronicle that while they were married, they had planned on having a large family but demons took hold of his former wife. “I look at Andrea and I think that she was weak,” he said. “Think about a field of deer and there is one limping around. That’s the way I see it, Andrea was weak and Satan attacked her.”

Yeats is likely going to live the rest of her life at the Kerrville State Hospital, 259 miles west of Houston. She will probably draw her last breath there. Andrea Yeats could have been Houston’s version of June Cleaver if she wanted to. Instead, she chose to kill her children. While she knew right from wrong, she was punished once for her misdeeds and will probably spend her remaining days on Earth wondering “what would my children look like,” “what would they do,” “would they go to college,” or “would they marry and have children of their own?” Those questions will be asked by her over and over again but history will for all eternity seal the answers to them.

Andrea Yeats spent another Mothers’ Day alone. She will spend more Mothers’ Days alone until she draws her last breath on Earth. Her four children are not here to ask her, “why did you kill us?” Mental disease, postpartum and insanity drove her to the deed. Her punishment? Being sent to a Texas mental hospital, which in some cases is a lot better than being in a women’s prison.

Andrea Yeats will fade away into history and be forgotten by some. Family and friends may continue to visit or write her, while others will no longer want anything to do with her. She lives with her fears and knowing what she did was wrong. For her to be sent away from society is punishment enough.