JET by Russell Blake.
Here is the description from Amazon:
Code name: Jet
Twenty-eight-year-old Jet was once the Mossad's
most lethal operative before faking her own death and burying that
But the past doesn't give up on its secrets easily.
her new life on a tranquil island is shattered by a brutal attack, Jet
must return to a clandestine existence of savagery and deception to save
herself and those she loves. A gritty, unflinching roller-coaster of
high-stakes twists and shocking turns, JET features a new breed of
protagonist that breaks the mold.
Fans of Lisbeth Salander, SALT,
and the Bourne trilogy will find themselves carried along at
Lamborghini speed to a conclusion as jarring and surprising as the
story's heroine is unconventional.
--I enjoyed this quick read! All action, bad-ass, hot woman in black leather!