From Prom Queen to Terrorist is a typical tabloid hook for a little hate-baiting, which the Mail excels in.
It does not prove that Island is a bad influence on our young at all. It does illustrate (but not prove, a vital distinction) that all terrorists were once teenagers, just as they all drank milk as babies, and played with their friends, and grew out of clothes, and the myriad other things that all children do on their way to adulthood.
The notion of corruption by bad habits of a bewildering variety, of which radicalism is only one is a matter of the individual, and the circumstances.
I would rather look at preventing the spread of alcohol poisoning which is far more widespread, and does far more damage than the ponderings of a right-wing newspaper with no evidence that this woman has been involved in the latest atrocities at all.