There are a lot of rules when you are doing magic. But being mindful of safety is one that any teacher will try to share with their student. Or at least any teacher that wants both himself and the student to survive.
But the people they took in are largely those unfamiliar with casting rituals, most are not even literate. So it shouldn't be surprising when a grown man barges in with some grievance. And much less when his kid approaches too close to the ritual circle. Seeing no choice, Phaidra decides the best option is to spend the magic as safely as she can without affecting anyone else.
Which means that she takes all in and gets the spell to target herself.
She is lucky to be alive. Whenever she is, she blinks away the after image from the strong lights in her eyes.