<<<< Could this be a hardware fault in her machine? >>>>
Is her computer a "Laptop"? Some Laptops have their aerial in the screen section with a wire running through the hinge to the Wireless Network Adapter in the main section of the computer. This wire can be damaged by the continual opening and closing of the Laptop and this results in an almost total loss of wireless signal. If the Laptop is fairly old and this is the case, the simplest solution is probably to plug a USB Wireless Network Adapter in and connect with that instead.