Be Ruthless - go for a Hog-Tie

Hey, if she's co-operating, and it's just the one knot, why not go for the nuclear option? You do need the leg-up on her.

"OK, this'll be easier if you lie down on the sofa," you say, as you slide Natalie's selection up against the armrest. She gives you a quizzical look, before lying down on her back. You motion for her to turn over and she does, slowly, as you reach down for the blue plastic clothesline, the longest of the "ropes" you have on offer. Natalie doesn't look too pleased, but having her do what you order is... satisfying.

"Are you sure you want to use that?"

"Yep. Hands behind you, please."

Natalie complies, and you start to wrap around her wrists, a few times horizontally, then vertically again, before tightening that part of the restraint up, leaving one end about a foot long and facing up along her back, while the rest of the line comes out towards her legs. Now for part two:

"Ok, now bend your legs back."

Natalie huffs, but complies. However, she can't quite get her legs back far enough unaided. You want to loop the rope around both legs together as well as tightening up the returning rope, but that quickly turns out to be impractical, so you settle for allowing slack in that line, while repeating the same sort of tie as on Natalie's wrists - ankles crossed, rope wrapped horizontally a few times, then vertically. You bring the loose end back and pull it tight, bringing her legs back a bit further than the position she was able to hold by hooking your arm through above her ankles. Natalie groans a little, but doesn't say anything. You finish it off by tying the loose ends together, satisfied with the knot you tied as the slack is taken up by Natalie's returning legs, the knot not moving at all.

You take a step back, admiring your handiwork as you do. Seeing Natalie trussed up like this is... interesting. The feeling of power as she obeyed you was pretty fun, restricting her when she could just say "No" and be done with it. Hell, she could have just overpowered you, if she really didn't like it. But she didn't, did she? You grab Nat's controller and put it in her hands, but she turns towards you, sounding unsettled:

"Are you sure about this? The wire's a bit tight, can you check my hands." She does sound a bit concerned...

"They're OK," You reply, although it's not entirely the truth - they are going a bit red. You can't keep her like that for too long, but hopefully she'll give in before then. Hopefully.

You turn back to the TV, and Natalie starts the next game for you.