I think it's heard to judge on what we know. But from what we do know, while having a great deal of sympathy with the parents who must have been desperate, I don't think they did the right thing. Of course, I can see why they did what they did and would hate to be in their shoes. However sorry I feel for them, I still don't think they acted in the right way. That said, clearly the relationship between the medical team and the family had broken down, so there is a fair degree of blame to borne there too.
I think removing your sick child from a hospital without informing medical staff was always going to end in an alarm being raised. The family must have known that. The medical team had little choice- the little boy was removed from the hospital without the parents informing anyone- the reason for that doesn't change the ultimate outcome. How were the medical team to know whether the parents had the appropriate equipment or not? The parents hadn't told them of their plans nor what measures/equipment they had put in place. The hospital are obliged to raise the alarm in those situations.
Can you imagine the outcry if the medical team hadn't done anything, shrugged their shoulders and said "oh well, who knows where Aysha is or what's happening him but let's ignore that and move on to the next patient" and then something had gone wrong? Would we all be saying "it's up to the parents and they have the right to remove him. Nothing to do with the hospital team". I Doubt it- the hospital would be being hauled over the coals for not following correct procedures.
The medical team have an obligation to make an application to the courts for the child to be made a ward of court if they feel the parents are not acting in the child's best interests . The team appear to have felt the parents were pushing for a futile treatment, which would have caused suffering for little benefit and did not think the family were able to care for him at home. The court are not obliged to grant that order and I think it is fair enough to question whether the hospital team's views were correct. I genuinely don't know as we don't have enough information.
All of that said, it doesn't seem right that they were arrested- my understanding is that was the only way to enable foreign police forces to help search for the family. Still, it seems unfair and counterproductive.
Disclaimer: I am a doctor, although not a paediatrician or oncologist. I have no specialist knowledge on this subject, but I was listening to an interview with a specialist on the radio who thought it highly unlikely that the proton beam therapy the family wanted would be suitable, which is why the medical team in Southampton declined to offer it. I don't know if this is correct or not, admittedly, but if that is the case you can see why it wasn't funded. I understand why the family would hold onto any hope, even a slim one, and the medical team should have offered a 2nd opinion (if they didn't).
However, the boy's grandmother stated the family hadn't been informed of this- which suggests that communication and trust between the family and the medical team was poor. That is a failing from the medical teams point of view and contributed to the situation ending the way it did. This needs to be addressed.
Overall, a sad situation with an outcome that has been pretty awful all round.