If it does come to that make sure she understands that there will be people viewing her naked if she goes that route. It is better for her to know that beforehand rather than find out about it afterward. The image will be the equivalent of a black and white photo. She should understand that it is not just a picture of her bones that the CATSA screener is viewing. It is her skin. It is a virtual strip search machine.

The Canadian imagers are all millimeter wave (RADAR or microwaves) and considered pretty safe by most people here with a technical background. But obviously everyone feels differently about being viewed naked by strangers. I hate the idea, but many people don't seem to care.