So what really going on?
Well, we've got to start on one of those space-prison planets:
He stages a jailbreak for Kimor...why?
Kimor enrolls at Stanhope University as "Kim," and proceeds to use his "charms" on Linda Danvers...
But what's the point?
Fortunately, in this era, we still had thought balloons. SO let's let Brainiac thinkslpain to us:
That's a plan, I guess. Make her fall in love with a robot, have the robot "commit suicide" because of her, so she'll blame herself for his death and quit being Supergirl. (Apparently, unlike the Man Of Steel movie, in this universe, you don't get your first killing for free).
Well, there's absolutely no way that plan could have gone wrong.
Because in the Silver Age, the only proper response to a villain's insane and unlikely plan is to come up with an even more unlikely and more insane plan of your own!!
From Adventure Comics #388 & 389 (1970)