I complete Prevent training annually. We are told to treat Prevent as part of safeguarding. Shamima's story is exactly what Prevent is aiming to avoid. In her case, she was not safeguarded. No one noticed (or, of they did, did anything) that she was being radicalised. Whatever negative things she would have heard about ISIS would have been explained away as being justifiable as following the 'true Muslim way'.
Once she was there, do you think she could have just turned around and said she'd changed her mind and wanted to come home? No, of course not.
If someone powerful in ISIS told me to sew up a suicide vest, I think I would jolly well have sewn it up if I was in fear for my life, or the life of my child.
If I saw a head in a bin, but I had been told that they had committed some 'terrible' sin, then I would go along with it.
When she did those initial interviews in the hijab, she was still within the original camp, so of course she couldn't speak freely about Manchester bombings or heads in bins. I imagine what she knew or could find out about the outside world was very limited and told to her through an ISIS lense.
For those saying she comes across poorly, she has been contained within a very strange environment for most of her formative years. She is probably still struggling with cognitive dissonance about the different things she has been told.
In my opinion, she is a victim and should be treated as such. She has been failed by us.