For the benefit of the wider UKP audience: Diva are pretty good at keeping their site up to date. As such it's very likely that this girl is not in London. She doesn't appear on Diva's not recommended list which would likely be another reason why she's not active.
As for getting in contact with her, dont know. I think I would respect her privacy or see if she's on another agencies books as the girls tend to be on several.
