She is speaking natural English and appears to be a native English speaker. All the words and expressions she explains are well known and are regularly heard in real life. One or two have a faint whiff of business jargon, but this is to be expected since the topic is "expressions in the workplace".
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Mr WordyAll the words and expressions she explains are well known and are regularly heard in real life.Oh, except perhaps for "power lunch", which sounds pretty corny and dated to me. I don't know whether it is used seriously in AmE though.