@Clymene
Is Olga guilty of killing her son? Absolutely. But Dylan's father and the support services which were snatched away from Dylan are also to blame. Yes Olga is guilty of manslaughter. No, Dylan’s father is not to blame, nor is Ms Surpickaja who provided 12hrs/week care for Dylan in his home even during the lockdown.
She didn't kill Dylan because she was at the end of her tether, or was fed up with him or because she decided it would be a mercy. She was psychotic.. No, she was not psychotic. If she had been, she would have been diagnosed with a psychotic disorder by now. She wasn’t. She was diagnosed by Dr Bird as having a “severe depressive episode with psychotic symptoms”. This diagnosis means that while she had symptoms, they did not reach the level to be called any of the psychotic disorders nor was she suffering from psychosis otherwise the Dr would have stated that. And depression is a mood disorder, not psychotic, So, no, she wasn’t psychotic at the time of Dylan’s death. She was in touch with reality she knew she was killing him and knew when he was dead.
So the only question here should be: was her psychosis preventable? And the answer to that seems to be probably yes. Which brings us back to who else was responsible. Since she didn’t actually have psychosis, then she was the one responsible for her actions, not the father hundreds of miles and an ocean away in Spain and not Ms Surpickaja, Dylan’s other carer.