I take apart bombs, missiles and other explosive ordnance for a living, and sometimes we have to wrap certain components or fuzes in aluminum foil to lower the effects of RF on them for transport. The general rule I follow is if you could put it underwater and water would get in, then radio frequencies won’t be deadened. So if she wants to be protected then she would have to create a watertight seal around her head and do us all a favor.
I take apart bombs, missiles and other explosive ordnance for a living, and sometimes we have to wrap certain components or fuzes in aluminum foil to lower the effects of RF on them for transport. The general rule I follow is if you could put it underwater and water would get in, then radio frequencies won’t be deadened. So if she wants to be protected then she would have to create a watertight seal around her head and do us all a favor.