He's in Emma's dreams every once in a while. However, they are not sweet dreams.
In fact, she dreams of the moment he dies. Graham falling to the floor, cradling his form in her arms. Shaking him, screaming his name between tears. It creates a new sense of fear every night;he can tell when he's watching her cry in her sleep. Emma squeezes the pillow next to her for dear life, mutters his name.
"I miss you," she whispers as she awakens from the nightmare. She buries her face in her pillow,muffling her sobs.
Graham drifts closer to her bed, and sits - well, floats on top of her sheets. He rests an invisible hand on her shoulder, desperately wishing to actually be there with her. He wants to comfort Emma, hold her in his arms. To say that's he's right here, in the same room as her.
He can't, however. Instead, he whispers, "I miss you too, Emma."