Isabelle Lightwood (to dead Sebastian Verlac): We'll make 'em pay for what they did to you.
Clary Fray: We're going to make them pay for everything.
Isabelle Lightwood: Clary, Seelie magic might trick you, but it's always true. I know it's confusing. But you can have feelings for two people at the same time. It doesn't make you a bad person.
Isabelle Lightwood: I'm in recovery now. I'm gonna be okay.
Maryse Lightwood: I am so sorry. This is all my fault.
Isabelle Lightwood: No, Mama. It's mine.
Maryse Lightwood: I've been so hard on you. Put so much pressure. Of course you needed a release... Sometimes our angelic duty seems to... overshadow everything else. We forget we're human, too.
Isabelle Lightwood: Mom, you deserve to be happy.
Maryse Lightwood: So do you. Despite this, despite everything, I hope you don't give up on love. I hope you fight for it, like your brother.
Isabelle Lightwood: You don't know my mom. She expects nothing less than perfection. Always. Sometimes I wonder if I could ever live up to it.
Sebastian Verlac: You know, maybe that's the attitude that got you hooked in the first place?
Isabelle Lightwood: I don't want to disappoint her.
Sebastian Verlac: Izzy, it's... it's okay to struggle. Life is a struggle. The point is that you are in recovery, and you are succeeding. Quite well, I might add.
Raphael Santiago: I’m… not like that. I’m just not interested in sex.
Isabelle Lightwood: Being a vampire made you this way?
Raphael Santiago: No. I’ve always been like this.
Isabelle Lightwood: You staying out of trouble?
Simon Lewis: Well, I haven’t been kidnapped in a while, so…
Isabelle Lightwood: Quite an accomplishment.