Penelope had repeated the incantation enough times to get it right, so she moved on to the wand movement. Sideways figure eight. She repeated the wand movement over and over, until her arm was tired. When her arm got too tired, she rested her arm for a few minutes. Why hadn't they learned this spell a few months ago? It could have been so much warmer inside. After a few minutes, she started the wand movement again. Infinity sign, over, and over, and over... This could go on forever.