"He's a manipulator. He doesn't care about you!" Harley tells you, removing the explosives the Joker ordered you to put on.

Harley isn't going to let you ruin your life for the Joker, she sees enough potential in you to go on your own, not to be that psychotic clown's pet.

"I've been there, and believe me, you should be running away like me." Harley insists, throwing the explosives on the ground and putting a hand on your shoulder.