I've been wondering about what crimes Shamima has actually committed.

I understand her opinions and loyalties are abhorrent, and that she demonstrated support for a terrorist organisation by arriving in Syria to marry one of their adherents. But am I right in thinking that none of these things is actually a crime of itself?

She did travel using her sister's passport, which was illegal of course.

Is it against UK Law to be the wife of a jihadi and bear his child?

If she were to be repatriated to the UK, what exactly would the CPS find to accuse her of?