Jason didn't chase after Rachel, he was ready for whatever punishment that came with his actions but he was aware he had one more thing to do after getting rid of the body.
He needed to confront Mariam, Jason knew they were nearing the end game and he needed to get rid of all liabilities.
Jason went to the gate and just as he thought, it was opened with little to no questions.
They assumed he wanted to do a patrol outside the wall and offered to help but Jason reassured them that he would be fine.
This wasn't just a walk, he wanted to get some fresh air as well and they understood how tiring staying inside could feel but he was a raider.
If anything, he should be relieved to be within the walls and this was why they admired Jason.
He was a man who protected the community at the cost of his health or sleep.
Jason walked and just kept walking, he didn't know where he was going but he understood that it had to be far away.