It's a bit strong her family blaming the UK for their daughter's treachery. Her father, Ahmed Ali barely saw her or had contact with her.
He was a tailor,now retired ,and spent most of his time in Bangladesh during her childhood. He still lives in Bangladesh.
Perhaps lack of parental control and guidance should be the real contributing factor and blame should be directed at the parents.
There is some speculation that he was never legally married to his so called wife under English law so citizenship and leave to remain is an iffy issue. Perhaps the Home Secretary has more info than the press and that is why he happily revoked Begum's UK citizenship.
Do we really need a young treacherous prostitute and thief in our country? Even her Dad believes the UK is correct.
https://www.birminghammail.co.uk/news/uk-news/shamima-begum-should-not-allowed-15878102