She had shuddered then at being irrevocably shut out from the Cloister.

She shuddered now because the arrival of a messenger from the Bishop, and something indefinable in Hugh's manner, had caused her to look back.
She stood quite still.

None came to seek her.

She seemed to have turned to stone.
It was not the first time this looking back had had a petrifying effect upon a woman.

She remembered Lot's wife, going forward led by the gentle pressure of an angel's hand, yet looking back the moment that pressure was removed.
She had gone forward, led by the sweet angel of our Lady's gracious message.