I think you are not including the two lines which run off the bottom and right edges of my image. One is a worldline and the other is a simultaneity line. After the turnaround, the traveling twin has to determine where those two lines intersect, in order to reckon the distance between emission and reception. I told you earlier that after the turnaround, he reckons that distance to be even greater than the current distance to her, because he reckons she's been moving toward him instead of away from him. Since the image pulse comes from the past, he would reckon she was even farther away than currently, (but only after the turnaround).