Yes. I would make the same assumptions about anyone travelling to meet terrorists, regardless of age, sex or any other personal quality. I do not believe that white people, middle class people, or any other kind of people somehow cannot be terrorists, nor do I believe anyone should be exempt from the law.
For any radicalised person who returns here could kill, or facilitate other killers. And that is why IS became a proscribed organisation, and why dealings with them at all is a crime.
I can still hope that the Turkish intelligence reports are wrong, and that these girls are retrieved before they cross over (much as I would hope any crime, committed by anyone can be averted).
FWIW: I do not think this whole thread is about assuming that guilt is proven without a trial. Both the title and the opening post refer to the girls being charged and that's pretty much what happens to all returnees from those areas. I do not think there should be special treatment exempting some from that.
(Nor am I planning to vote Green, because I think the regime of proscribing organisations works and is being used appropriately).