IT SUDDENLY DAWNED ON HER...

to dawn on somebody if a fact dawns on you, you understand it after a period of not understanding it; if something dawns on you, you realize it for the first time; to become known or obvious to someone, often suddenly:

It finally dawned on him that she’d been joking.

It was several months before the truth finally dawned on me.

Little by little it dawned on Archie that his wife was not coming back.

photocopies from 14th March
photocopies from 16th March