Since you've limited distance, it doesn't really factor into it..
You can spend fatigue to improve chances of success on a teleport. 1 per +1..
Warp (Limited distance 10 meters -50%, Reliable 10 +50%) [100]
So they can teleport anywhere within 10 meters that they can see, instantaneously with no penalty. If they pass the IQ roll. They can also spend fatigue to raise their chances.
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather