Klaus leaves him alone more than he expects. He believes it’s because he is so lost in the haze of the blood and the rush that Klaus knows he won’t run. That, and Stefan knows that if he even makes an attempt to get away from Klaus, everything he left behind would be ruined. Klaus would destroy it all, and Stefan cannot let that happen.
In the moments when he is alone during the day, he struggles to get himself under control, to keep from attacking innocent people. He knows for a fact that Klaus does not keep an eye on him on all times, and so he times it very carefully.
The more they travel, the more fascinated he becomes with postcards. The trail of compelled shopkeepers, that Klaus does not know of, he leaves behind grows longer as time goes by.
The only rest he gets, from Klaus, from their victims, from the destruction they leave behind, from his demons, is at night once Klaus has retired. It is then that he closes his eyes, inhales deeply, and is with Elena. He knows it’s not real, but his imagination is strong. If he concentrates hard enough, he can almost feel her heart thrumming where she rests against his chest. He can almost bury his face in her hair.
It is then that he is almost, but not really, home.