Or has she negotiated something she knows won't get through Parliament; and then Parliament won't want a 'no deal' either - leaving them with the option of having a second referendum. At which the public might then vote to remain. Which is what she started out wanting.
Maybe she's a canny...
54% if you take into account the 'referendum on whether or not to accept the deal' - because I would guess the folk who went for that are Leavers - otherwise they would have gone for the No Brexit option?