This type of motivation is very very common in people who go into health care professions. There is nothing sinister about it.
If you ask health care students why they chose their careers, almost all of them will say one or more of the following
family member worked in healthcare
they enjoy science and working with people
they/ family member / close friend had medical / dental / nursing care for some illness / condition and they thought the job looked interesting.
Nothing about Lucy Lethbys background or life ( that we know about ) is in any way unusual or exceptional. It’s her normality that everyone find frightening. That’s why we are all scrabbbling around for A Reason or even The Reason.
We want to find a reason to blame her parents . Even though there’s not a shred of evidence that they have done anything wrong. But we want to blame them so we can exonerate ourselves , tell ourselves that our kids will be fine because we are Good Parents.
All we know of her poor parents is that have stood by her for years since 2018 and been there for her every day for months during the trial . I don’t know where they have found the strength, my heart goes out to them. They have lost a daughter too and we’ve no reason to think they are any different from any of us. Their grief and guilt must be unbelievable, no wonder they can’t accept it.
And yes of course I also feel deeply to everyone else who has suffered and will suffer from Lucy’s actions. The bereaved families and the traumatised colleagues. And most of all to the children who are growing up with profound disabilities, who suffer every day.
There are lots of victims here, the damage caused by these evil actions ripples out.