She's gone.
We had a lovely Scottish vet who also knew Liam. He said Mollie's condition was most likely neurological given that she'd "stargaze" - look upwards a lot and fall over. She'd also lost a lot of muscle in her back legs and her front legs were weak. We could have had tests done to pinpoint what was wrong but we were told the outcome would be the same. So we said goodbye to the real Grumpy Cat.