Dean
He didn't came to Sam for few days. He just dissapeard with Impala to clear his head, let out his emotions. He wanted to bring you back, make deal with crossroad demon but she didn't wanted to make a deal with him. He ended up drunk in motel room, in care of Sam who was worried. Of course he was sad too, you were like child to him too. But Dean was going to kill himself by this way. He didn't came near woman for a long, long time.

Sam
He just cryed in motel room. He felt like he lost everything. His child, girl that he cared for most. Dean tryed to help him but there was no way. Sam needed to get up alone. He tryed to make a deal what failed. He began to hunt more and more, burying himself and his thought in work. He didn't cared if he get killed. But Dean had to slap him to make him realise that you wouldn't want this for him.

Castiel
He tryed to bring you back. He tryed how he could. But some hunter with angel blade killed you. You fought like a tiger but you were still young. Castiel dissapeard for few weeks and when boys got worried, they called him and found out that he was drunk. They took care of him, even trough his protests, and kept eye on him for days. He seem more distant, cold and sad whole time. He would just dissapear and show after few days. After few days after your death, they found that hunter dead.

Gabriel
He didn't knew what to do. He didn't wanted to do pranks. He just sat in his room, with your photo with him and sobbing. He had no idea how to deal with it. He wasn't prepared for your leaving. Another angel killed you when you were with Winchesters, protecting them. They told millions sorry's to Gabriel and he understood. He was proud about his child that you protected them to your fast breath. Gabriel just ate sweets and locked himself from world.

Lucifer
He was angry. Really angry. Demon killed you when you were with Winchesters. They tryed to protect you what failed. Lucifer killed that demon with long torture but that wasn't enough. He killed and killed. He was broken inside. When he stopped, he cryed, locked from world. His hatred deeped after that but he didn't do single problem to Winchester boys, because he knew how you liked them.

Baltazar
He drink. And when I say drink, I don't mean his usual one bottle. He drink five or six bottles in half day. Gabriel tryed to help him, but failed when angry, drunk Baltazar send him away, yelling that it is hunters fault. Because one hunter killed you. You were, shy, helpless angel. He didn't understood why but he was mad. He made that huter suffer.