So, I may have started this discussion in #qc last night...
How much force could Pintsize impart on Claire, and would Pintsize's impacts cause Claire actual pain, or just annoyance?
I started the experiment by hitting myself with the Calibrated Wrist™ (why use a torque wrench, when you can guesstimate with your wrist?). At about 40 ft-lbs of force, it was enough to annoy me. 100 ft-lbs was about right for the sting of a spanking intended to inflict pain. 20 ft-lbs, noticeable, mildly annoying.
I'd estimate that Pintsize is about 20 pounds, based on his size, and the amount of energy storage that would need to be in there, as well as cooling hardware. Claire looks like she's about 5'1" or 5'2", and I used to know someone of her build and that height that was 100 lbs soaking wet.
The paddle is about 2 feet long by 6 inches, and is probably wooden, making it about a pound or so. But, that's not actually important.
See, if Pintsize put 100 ft-lbs into Claire through the paddle, Claire is a much heavier object. Newton's third law... and Pintsize flies across the room, unless he's braced against something much heavier himself.
I'd estimate that Pintsize is putting about 5 ft-lbs into Claire, anything more and he'd lose his balance. That's like lightly tapping her.
</spontaneous nerdy interlude>