Didn't multiple girls from her school year run away at the same time? The rest are dead, I believe. What was happening at that school?!
I think she was failed. She was 15, and she was groomed. Yes, I agree that it is harder to sympathise with a teenager who is groomed by a terrorist group or a criminal gang than a teacher or pop star, but it is the same psychological mechanism, except carried out by a team of people who have made a profession of it. I think it's vital to note that. Isis had people whose specific role was to gain the trust of western teens. Is it any surprise that they might have becen skilled at it?
Meanwhile, many, many teenage boys who joined ISIS in order to kill people are back in the UK. It escapes our notice, because their ashamed families never released their names. We only know Begum's because she ran off to get married.
She was married to someone within a couple of weeks of landing in Syria. Whatever she was expecting from marriage, I doubt that she got it. We know what ISIS are like to women who are not muslims or the 'wrong' kind of muslims. I don't believe there is such a thing as a organisation of men who rape and enslave women and then morph into radical feminists who believe in a wife's right to say no.
And finally, Begum is our problem. We deport foreign-born men and women who commit crimes back to their home countries. Why shouldn't Syria be entitled to do the same?