Think of the bees!
K Band, C Band, AM, FM, DTV, etc (aka stronger radiation) doesn't affect her? But low-power 2.4Ghz does? She shouldn't go outside. And needs to rad-hard that home...
If she drives a car, sits at a computer (or uses a laptop), has a digital clock, owns a microwave oven, has children nearby (baby monitors, RC cars, walkie talkies)...well...
Maybe she should change her pillowcase/sleeping habit and see audiologist about that tinnitus.
(Question: LA Times really needs to hire better journalists... WiFi is generalization. What is the frequency? Mhz? Ghz? How is it low power?)