No front camera

Odd issues. Friend's verizon moto x took the lollipop update and now she says, her front camera doesnt work. So I look, there is no button to switch to the front camera on the moto camera, just a video button (all her apps are up to date). So i download the google camera, and no button to switch. I looked at 3-4 camera apps, very odd. Maybe her actual camera sensor is borked? Anyone seen this? TIA