That is...rude. And a little psychotic. Oh wait, you're a preist. Now it makes sense XDPhysicality strictly speaking isn't necessary if your a smooth talker and you can convince her to drown herself. This is advanced stuff though, you've got to make her feel suicidally depressed quick enough that she doesn't consider screaming at you.
My other main tactic is probably my favourite though. It's a little expensive, but i can be totally worth it. This operation requires a large electromagnet in your room, and really a lack of any sharp of heavy metal objects in their too. Once you tested it and made sure it's powerful enough to hold a person you're set.
The second stage of preparation is then key, and the larger the girl (or guy) the better the results and the more likely the success. You need subtlety, and you need dexterity. Ideally you need about a kilogram of metal ball bearings, as large as you dare and as much spinach as possible. Once you feel sufficiently ready, over the course of around a week you need to get all the ball bearings and large amounts of spinach into their food. Fat people don't chew, so they likely won't notice. It's vital to do this quickly though so they don't crap it out, and the spinach is even more vital if you're weedy, because it gets digested quickly, flooding the blood with more iron that will help hold back their limbs and prevent struggling.
Once you've sorted out their diet, you need to repeat step one from the other exercise. Get them back to your place by any means necessary and to your designated magnet room. flip it on and watch them fly! And then stick. And then sit back relax and enjoy.