The inconvenience that your daughter has been put to is exactly the disruption that these terrorists want. They know they do not have the power to beat us military but they do have the power to disrupt and of course kill and maim.
She feels the tension in England between the Muslims and the rest of the people. Even those who aren't 'anti-Muslim' are getting fed up with what's been going on there.
She's wondering if there might not be an increase in trouble because even moderate people are sick of what's going on.
If this plot had succeeded, I can't imagine how angry people would be.
What do you think from your perspective?