Well, I've listened to - some of - the Australian session and I'm still only getting French in her accent (the light dental 't' sound, for example, as well as the intonation - such as in 'quantitive'). I would have expected some American influence there, given the time she spent in the States, but I didn't hear any. The only distinctive feature of Northern English I noticed was the 'u' sound in 'luck', for example. This particular phoneme is obviously absent from French, so a French person would have to decide whether to approximate closer to 'lack' or 'look'. In CL's case, the pronunciation is somewhat closer to 'look', which is maybe what creates a suggestion of Northern English. That's all I could pick up on, though.