Obake said:Which is good detective work and certainly a possible explanation, I suppose, though a) Wouldn't one normally keep such a device in a purse or coat until there was actually someone talking to you? I don't know that anyone would walk around just holding the device up to the side of his/her head, and b} the person certainly appears to be talking or at least moving his/her mouth.
She may well be taking direction from the people filming. It wouldn't be unusual for an amateur/member of the public to make an arse of it like she has.
"Just keep walking, Mrs Worthington!"
"What's that, dearie? I'm a little deaf, I'm afraid."