Probably a lot of factors. She was older and so less physically able to handle two active boys, at least one of which had serious emotional/mental issues. Kids with those kinds of issues can be extremely difficult for any parent to handle, regardless of age. No father. As the kids grew into their teen years, no doubt they became physically stronger than her. At her age, she may have had her own health issues.
It's so easy to blame a child's behavior on a lack of discipline, but I think that's overly simplistic. If a child is unable to control his impulses, or goes into violent rages, due to emotional/mental issues, discipline isn't going to make a bit of difference.
He was in counseling, attended an alternative school, and IIRC, was on meds. The problem is, someone in need of this kind of help has to *want* the help and has to cooperate. I'm sure his mother wasn't able to hold him down and force him to take his meds.
There are no easy answers here, and I'm not willing to blame a dead woman who had to raise a mentally ill child (or two) on her own at an advanced age. She rolled the dice on adoption and lost, and only a couple of years later unexpectedly became a single parent. Had she been fortunate enough to adopt a neuro-typical child, the outcome would have been different, and some other adoptive parent would be in the spotlight.
She did, indeed, raise this monster, but she didn't create him.
Moo and all that.
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