I might have been more inclined to entertain that analysis if she hadn't said the following in her speech today (apologies for quoting a whole chunk, but I think it's all of the essence):
"Many of our political and business leaders have responded by showing that they still don’t get it. There are politicians - democratically-elected politicians - who seriously suggest that the government should find a way of ignoring the referendum result and keeping Britain inside the European Union. And there are business leaders whose response has not been to plan for Britain’s departure or to think of the opportunities withdrawal presents - but to complain about the result and criticise the electorate. Well, I couldn’t be clearer. Brexit means Brexit. And we’re going to make a success of it. There will be no attempts to remain inside the EU, no attempts to rejoin it by the back door, and no second referendum. The country voted to leave the European Union, and as prime minister I will make sure that we leave the European Union."
I would agree with you Fred that there will need to be a vote in parliament. But I'd pretty confidently predict that it will be along the lines of "...conform to the wishes as expressed in the referendum" and will be passed by a majority of MPs, who know a fait accompli when they see one.