Please at least try to understand
Look: May has a difficult line to walk. Whenever a politician says anything, you need to think: who are they talking to? The answer isn't as simple as "their current audience", because they know their words will be reported and repeated through other channels.
52% (ish) of British voters voted for Brexit. Those 52% can be broadly divided into three groups:
A small number - let's say one-tenth - had actually thought through the issues and arrived at a decision rationally. (It is possible, even if you think their conclusion was wrong.)
A fairly large number - let's say one third - were merely expressing some incoherent dissatisfaction based on misinformation, spread mostly by the tabloids, over the last 30 years.
And the rest were expressing various shades of "get the damn foreigners out of my country".
Of course we don't know the actual breakdown of those numbers. Theresa May's guess may be more accurate than mine, or it may not.
But May's job, right now, is to appease the last of these factions. Nobody really knows how big it is, but thanks to Cameron's folly (compounded by Farage and Corbyn and the rest of those idiots, but the basic idea was Cameron's) - those people now think they are the majority. That makes them dangerous, and they need to be placated.
They are not, on the whole, very highly informed. They are not big on the subtler points of international law or diplomacy. May has to send the signal that she's doing their bidding, while simultaneously not burning Britain's bridges to Europe. (Keep in mind that the European leaders are politicians too - they understand her position better than most of us.) That is why she's playing her cards very, very closed at the moment.
In the technical sense, "hard Brexit" is undefined and therefore meaningless. But in the political sense, it's a bone thrown to the anti-immigrant crowd.