Victoria's visible annoyance at Mel C is so glaringly obvious. I remember she said later in their reunion documentary that she didn't even know she had depression issues. With Mel C recording all her Forever vox alone during 2000 they likely didn't see her much or at all between Brits 2000 and the Holler/LLLTW video shoot.
Also interesting how Goodbye hadn't been thought off as being on the album at this point aswell as Holler was still being called Holler Holler.
I think neither Victoria or Emma knew how to cope with Mel C’s odd behaviour and outbursts here. I guess the old dynamic of Mel B or Geri pretty much leading most TV interviews was missing and like you say Mel C hadn’t been in much contact with the girls. Painful to watch and sad she was facing issues at this stage.