her lot

Harry Potter and the Philosopher's Stoneを読み始めました。
小説を読むのに一番厄介に感じるのは登場人物が増えてくると誰が誰だか分からなくなることです。そこでハリーポッターなら人気のあるシリーズなので、ネット上に色々と情報があるはずなので読む前に特に登場人物の事前調査をしました。思った通りネットにはハリーポッターに関するサイトがありました。ハリーポッターの一作目のタイトルは米国版ではHarry Potter and the Sorcerer's Stoneで、使われている単語も一部異なっていることが分かりました。私が読むのは英語版です。
Mrs Dursley came into the living-room carrying two cups of tea. It was no good.
He'd have to say something to her. He cleared his throat nervously. 'Er - Petunia, dear - you haven't heard from your sister lately, have you?'
As he had expected, Mrs Dursley looked shocked and angry. After all, they normally pretended she didn't have a sister.
'No,' she said sharply. 'Why?'
'Funny stuff on the news,' Mr Dursley mumbled. 'Owls . . . shooting stars . . . and there were a lot of funny-looking people in town today . . . '
'So? ' snapped Mrs Dursley.
'Well, I just thought . . . maybe ... it was something to do with . . . you know . . . her lot.'
Mrs Dursley sipped her tea through pursed lips. Mr Dursley wondered whether he dared tell her he'd heard the name 'Potter'. He decided he didn't dare. Instead he said, as casually as he could, 'Their son - he'd be about Dudley's age now, wouldn't he?'
上の引用個所に出てきた "her lot" の意味が分からないのでネットの情報を見ると、米国版ではここは "her crowd" となっている事が分かりました。つまり、仲間、同類項の様な意味だと分かります。念のために、辞書の "lot" の項にこの様な意味があるか確認します。
・Oxford English Dictionary: British A group or a person of a particular kind (generally used in a derogatory or dismissive way): an inefficient lot, our town council; he was known as a bad lot; you lot think you're clever, don't you?
やはりこの意味で使われるのは英国英語だと分かりました。