To say she doesn't see it coming is an understatement. If anyone were near her at the time, instead of hanging back out of the blast zone, they'd see her moving through the courtyard completely oblivious, then stopping as she hears a strange whistling sound, and looking up a moment too late. Comically.

The explosion is devastating, kinetic energy flattening the courtyard. When she rises again, it's as a mass of broken bones and bruised flesh.

She screams an inhuman scream. It's not one of pain, even though she is feeling it, it's a scream of pure outrage over someone daring to undermine her dignity this way.

In short, now she's in a bit of a tizzy, and that's definitely something they can take advantage of.

Which is the whole plan.