Jessica doesn't have a Brother

 "Is the mayor's daughter gone?" Jessica looked up when Jonathan walked into the room.

 "She has gone."

 "Good! Put her on the blacklist, don't let her climb into my office again."

"I have done." Jonathan learns with understanding. "Is that all right, isn't she the mayor's daughter?"

 "She's just the mayor's daughter, nothing great about that."

 "Aren't you friends?" Jonathan listened to Merlin's part when the woman spoke, it sounded like Jessica and Merlin looked familiar to her.

 "She's not my friend. I'm not friends with an opportunist lady."

 Jessica never felt she had a great connection with Merlin the mayor's daughter. That woman who kept coming looking for her to be friends with Jessica and seek profit for herself. They have been out several times, so Jessica has a project with the mayor.