Unexpected problem

Part 4

Jace walked to the kitchen and grabbed a glass of water.
"Hey you." Jace looked around and saw Alec.
"Oh hey Alec.." he looked back at his glass that's filled with water.
"What's going on?" Alec asked.
Jace sighed. "Clary.."
Alec sat down on a chair and smirked. "What? She doesn't want to get laid?"
Jace looked seriously. "There is something wrong with her.." he said. "But she doesn't tell me."
Alec's smirk was wiped away of his face. "We should take her to the Silent-"
Jace cut him off. "No! She isn't going to the Silent Brothers Alec!"
Alec looked confused. "Why not? They can help her and-"
Once again, Jace cut him off. "Get Magnus, I'm going to wake Clary, now."
Alec sighed and went out of the kitchen to call Magnus, Jace walked to Clary's room and saw a certain Bloodsucker..

"Simon.."
Simon heard his name and looked at the direction from which it came from and saw all gold. "Jace, what are you doing- nevermind you came home today." he said.
"Yes I did, but don't worry about me, we have to wake Clary." Jace said deadly serious, but the worry was written on his face.
"What's going on?" Simon asked. "And she is already awake by the way." Jace gently walked to Clary.
"Clary." He whispered. "Darling, come with me please.." Clary looked up.
"What's wrong?" She asked.
"Just come with me." Jace said. Clary nodded and stood up, Jace grabbed her hand.
Take care of her. Simon thought. Make sure she'll be alright..

Clary followed Jace through the hallways. "Where are we going? What happened?" she asked worriedly.
"We have to make you better." Jace replied. "Better? I'm alright!" Clary said in a confused tone. "Clary, back when we were in the Silent City.. when you and Simon came in and Jem left.. he said that something's wrong with you.."
Clary looked even more confused. "Then why can't i just go to the Silent Brothers?"
Jace stopped walking and held her at her shoulders. "Clary no. If they don't know what's going on with you, they will rip your marks off!" Clary gulped.. "My- my marks?"
Jace looked serious. "Yes, your marks. And then you'll be a mundane and have to leave everyone behind. Then we can't be together anymore. You want that Clary?"
Clary frowned. "What? Of course not!"
Jace let her shoulders go. "Good, follow me.." He grabbed her hand and walked farther into the kitchen.

Magnus was waiting for Jace and Clary. "So? What's going on?"
Alec looked at him. "Jace says that something's wrong with Clary."
Magnus nodded and Clary and Jace walked in. "Thank you Magnus, for coming."
Magnus smiled. "Anything for my biscuit."
Jace leaded Clary to a chair. Magnus looked at them. What is about to happen? Magnus thought. He saw Jace holding Clary's hand.
"Alright. Let's get this started.." Magnus walked to Clary and took her other hand in his and closed his eyes...