Truly, while I get that it sounds all kinds of wrong, it is established practice to say ‘safe and well’ in these circs.
It’s not new, and it’s not something they do for the perpetrator’s sake. It’s not intended to shield him.
They could hardly come out and say the victim had been found traumatised by sexual assault/rape, because at that stage her name was still all over the press because of the ongoing search for her. Huge violation of her privacy to say anything indicating what she’d been through.
Also they may not yet have known, if she was not ready to explain fully.