She is incredibly small, and most likely sold to you without taking her first meal? This isn't great for her or you, it will be harder to eat I suspect.
Fill up her tank with the newspaper balls as soon as possible. Keep her in a very secluded place, dont bother her.
A mouse pinky is very small, and provides no nutrition or stimulation. I would try a mouse crawler or rat pup equivilent in size.
Prescenting with a pinky isn't prescenting, there isn't any scent there to give off. Go to a pet store, ask for a cup of soiled mouse or rat bedding. Before you feed, around 9 at night, put the cup in her tank, or right on top.
Around 10 at night put the mouse or rat in there, and leave. Check in the morning. (prey that small cannot bite, they have no teeth)
Excellent advice. Also I would up the prey size to a small hopper if you can find one.