It is a smart move. The next election was due in 2020. By doing this she gives herself a full five years to hammer out all of the deals required to "successful

It is a smart move. The next election was due in 2020. By doing this she gives herself a full five years to hammer out all of the deals required to "successfully" Brexit. With the opposition in disarray, they stand a good chance to securing more seats. This helps them to prevent other parties blocking the things she needs to pass in order to start revoking EU laws, which they have already said they will copy verbatim to start with into UK law, and then slowly rewrite the bits out they don't want. EHRC being one of their key targets.