well she had a troubled past - she was 'gone' before she entered the religion.

Terrorists and extremists uses this tactic to recruit people from all over the world especially in developed world. You can't simply go to London and preach about 'Love and Revenge' for the hungry when the Deli is just a stone throw away.

Find their weakness - family integration and unity are almost non-existence. Everyone is for themselves. Go wreck it and convinced these 'needy' people that Love, Acceptance & sense of belonging is what they can offer... provided they are ready to die for a cause. Oh lets throw in God somewhere, so they won't think they'll die in vain.