Wassup?! What did ya'll think of the last chapter? I needed to put some drama into the story! . Well.. Onto the story!

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Isaac glared at his alpha, his eyes flashing a dark amber color "She's your what?" He snarled, taking a step towards him.
Casandra's mouth was wide before she stepped in front of him "Don't you dare hurt him!" She growled, pointing her finger at him.
Isaac clenched his jaw, trying to push his sister away so she wouldn't get hurt.
Derek looked at Chris with a 'Did you really have to do that?' type of look.

"Isaac! Calm down. She hasn't even really.. accepted him yet." Stiles said, remembering something Deaton told him a few weeks back.
Casandra tilted her head "What do you mean? I accept that most of you guys are Werewolves.." She said, slightly confused.
"Not like that.." Derek whispered, rubbing his face "I'll explain it later.. We need you to stay with Stiles. Your brother will be there to protect John, Stiles, and you."

Casandra looked at Derek with shock, slowly her mind put the pieces together "I haven't accepted being your mate yet." She whispered, looking at Isaac before glancing at Derek.
Derek nodded, ignoring the look from Isaac.

Isaac grabbed Casandra's wrists, pulling her towards him "He can hurt you.. Even if he's my Alpha he could still hurt you." He whispered, looking up at Derek with a glare.
"I don't care Isaac!" She growled at him, trying to pull her hands away before she froze.

Everyone looked at her with confusion "What?" Scott asked, putting a hand on Isaac's shoulder.
"Erica.. And Boyd.." She whispered, pulling her wrist away quickly "Where is Erica and Boyd?" She asked, remembered what the Ethan had said.

Derek furrowed his brows "I think they're hanging out with each other at the loft. Why?" He slowly took a step forward, wrapping an arm around Casandra, pulling her back towards the cars.
"Ethan.. The werewolf who was holding me said something.. Something that wasn't right. He said 'You'll soon enough be with your friends Erica and Boyd'." She gulped, pushing her hands against Derek's chest as an attempt to put distance between them.
"We have to find them. And then we can deal with all this mate stuff."

-2 Days later-

Stiles and Casandra sat on Stiles' bed, looking through their school books.
"Stiles.. Do you think we'll find them?" She whispered, leaning into the older boy.
Stiles wrapped his arm around her, shrugging "I don't know.. Derek is trying all he can to track them and find them." He whispered.
The two of them had grown closer together in the past two days and act as if they've been friends forever.

Casandra nods, yawning "I haven't heard from Derek since the alphas came and tried to you know.. Make me pregnant." She laughed dryly, playing with her shirt.
Derek had sent a brand new phone to Stiles' house saying it was for Casandra. The phone had all the packs numbers in it. Including Derek's.

"He's busy with all the alpha stuff." He chuckled, laying back on the bed, pulling her down with him.
"Stiles.. Is it bad that I miss him.. That even if I've cuddled with him once that I want to cuddle with him so badly right now.." She giggled, closing her eyes.

Stiles shook his head, about to answer when he heard his window opening to reveal Derek.
Stiles smiled at Derek, letting him know that nothing was happening between him and Casandra.

Casandra sat up, looking at Derek with a frown "Where have you been?" She asked, noticing some claw marks in his long sleeve.
"I've been trying to find Erica and Boyd. We know for a fact they're missing but we don't know where.."

She nods, looking over at Stiles, silently asking him if her and Derek could talk privately.
Stiles smiles at her, placing a kiss to her temple before he stood up and walked out of the room.

Derek crouched down in front of Casandra, putting his hands on her knees "We're gonna find them.. I promise." He whispered.
She placed her hands over his, smiling softly at him "You can't make a promise that's gonna be broken.." She murmured, stroking his hair.

Derek nods, frowning a little. They hadn't talked about the mate thing and Derek's wolf was going crazy.
"Yes." She smirked softly, kissing his forehead.
"Yes? Yes what?" He asked, tilting his head.

"Yes I'll be your mate." She grinned, slowly sliding down so she was between his thighs "I want to be your mate. I accept everything." She wrapped her arms around his neck "Sourwolf." She teased.

Derek scowled at her before his brain comprehended what she said "Wait. You will?" He smiled, leaning his forehead against her.
"Yes. I will.. Is there some kinda ritual that has to happen so I'm officially your mate?"

He nods "It can wait though.. It needs to be planned out." He blushed a little, hiding his face in her neck.
"Do you knot? Like actual wolves?" She murmured, playing with his hair.

"N-No." He stuttered, biting his lip.
"Derek Hale. You tell me the truth right now." She pulled away from him, growling softly.
Derek clenched his jaw before nodding "Yeah. I do. But it's only happened once."

She nods, kissing his cheek "You should go, puppy.. I don't want Isaac flipping out." She giggled, stood up slowly.
He pulled down quickly, softly kissing her "Been wanting to do that for so long.."

She sighed softly "Please.. Text me when you get home so I know you're safe." She whispered, kissing him softly "Go home now. I'll see you soon."

Derek nods before running back out the window, leaving Casandra with her own thoughts.

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It's shorter then the last chapter but it's the best place to leave this off at! Do you guys think I'm moving a little fast? Leave your thoughts please! Thank you guys! See you next week!