Edward had taken a gamble sending that letter. He had given Jacob two weeks since he had left. He had had a thought that his apology was premature; that maybe to wound was too fresh to rip open for Jacob.
That night was the worst mistake of his existence. For the first time in decades he had let his emotion control him; raw, dense emotion that had been so pressurized inside him he detonated at Jacob. His body cringed at the memory of what he'd done. He had hurt the man he loved and in doing so hurt himself even more. He truly loved Jacob, and what Jacob had told him that night hurt him more than he'd ever know. It hurt the most because Edward knew it was true; they couldn't, in any world, stay together successfully. He paced back and forth on the forest floor. He never really left Forks, he had danced around the city limits for the past two weeks, trying to catch any glimpse of Jacob. He saw him a few times and to his surprise he also saw Bella. She looked to weak and feeble; she was an outline of what she used to be, and that wasn't all that great either. Edward hadn't known how much he meant to her and now he felt a pang of guilt in his gut. He'd seen them driving motorcycles on the main road. He was hiding low in some tall grass not far at all from where Bella had fallen. He saw her face close up while a chilling gaze set over her eyes. He wondered what she was thinking about, but then quickly slithered back when Jacob had come to help her. Edward had never read into Jacob's mind before out of respect for his private thoughts. He was sorely tempted to then, but he only heard thoughts about Bella's condition and something about a plan. He thought he saw Jacob twitch for a second and his thoughts shifted to Edward. Jacob had caught his scent and so Edward ran away as fast as he could. Then he went to his old room to start writing the letter.
He wasn't sure at first how he could deliver the letter without violating the treaty. Then he found a loop-hole. He wasn't allowed to set foot on Quileute land, so he simply would not set a foot on their land. He climbed a tree right next to the border and hopped from tree to tree until he landed on one closest to Jacob's house. From there he dove onto the roof, dropped the letter to the ground and then left in the same manner. Edward smiled smugly when he thought of his genius. He sat on the forest ground and closed his eyes. Now he would wait.