I wouldn't be so quick to discount her injuries. Ask anyone with a nagging back injury, some days you feel like an absolute champ and can throw a damn tree, but other days you're bed ridden from pinched up nerves. Thats just the nature of the injury.
I had a friend who got into a car accident, driver drove off a bridge. She's got a permanently fked up back. But you'd never know it from looking at her. Some days she's out and about playing football and cycling, other days she'll take 2 hours to get out of bed because the slightest movement will leave her in tears from her fked up vertebrae.
So let's just stay in bed the rest of our lives and not try to live a normal life. It's absolute bullshit that insurance is allowed to shirk their obligations by pretending be investigative journalist or playing doctor.
If you want to dispute a claim, it should be an independent medical panel pf doctors. Not just photos on a website or social media.