n t is right Treacle. Even our 4 wk babies can work a wheel. There must be a problem with it if it is not running well. Dismantle it and remove anything stuck round the spindle and smear with veg oil. You need to repeat this often to keep it running freely. It may be jamming on the bars or cage tray so experiment with positions in the cage till you find a site it will run properly. As n t says if you put her on and start the wheel she will learn quickly. She may just be a hammy who does not fuss for wheel running though and as long as she has plenty toys she will be fine
