Looks good so far. Have you considered turning her head to the right so that instead of both characters leading the viewer's eye off-screen to the left, she's facing into the page and leading your eye back into the canvas? (Like so, hope you don't mind the quick paintover!)
Another thing you could consider is that that robot must be huge so she would be very high off the ground: You might try lowering the camera so we're looking up at her a bit, rather than having the camera conveniently at the same level as her. Looking upwards at the subject makes them feel more heroic and fits their location in space in this particular picture.
Anyhow, either way, great dynamic interesting layout. And thanks for your note about Saturday Knight!