You make a setup. You have your camera, lights, props, etc in place for the setup.
You put your objects in place: puppets, play-dough, playing cards, deckchairs, people, bananas, whatever.
Take a shot or two.
Move the subject slightly. (But don't move anything else - including the camera or lights, unless you mean to.)
Take another shot or two.
Shot. Shot. Shot.
And so on.
Play the film back and the objects appear to move by themselves - mysteriously.
This is such a simplistic explanation it does not do justice to the technique - but you get the drift. And you can read more by clicking here. Like I said before... think Wallace & Gromit, Tim Burton's "The Nightmare before Christmas", and The Magic Roundabout (Doo-doo-duh Doo-dooo Dudududu-doo-dooh...) All of them stop motion animation.
So that's what Mrs Doonuthin wants to make. But on a peanuts budget. Like... software... laptop... webcam.
Cheapskate! Ooh but a wannabe film star like I - has to start somewhere. So I will grit my teeth and suffer for my art.
She'd better not be goin' to use that plasticine stuff tho'. She'd better be goin' to use "Moi".