Thank you for this, this is very interesting.
Up until this point I'd been convinced that Leah left of her own accord because of the lack of information from LE, but now I'm really not sure. The fact that she didn't withdraw any cash in the 28 days before her disappearance and that she was planning to redecorate her bedroom tells me that she wasn't planning to run away IMO. She has no access to money (no cash and she hasn't used her bank account since), and she was planning things for the future (holiday, bedroom redecoration).
The thing about her phone being turned off at 8:30am really strikes me as odd too. Could it be that someone did take her on her way to work and quickly turned off her phone to avoid location tracking (perhaps they didn't know that her phone couldn't be tracked?).
And I know there's been speculation that Leah would be able to fight back a potential abductor with her martial arts skills, but maybe she recognised the person and he/she offered to give Leah a lift to work? Maybe it could be someone who works somewhere on the Knowlhill estate, either in the same building as Leah or in another one and she has seen them around so would be more inclined to take a lift from them?
Just what I've been thinking, all MOO.