Right, so... she was carving? Supposing that the others would start chanting behind her, Alice raised her wand to just over the Ingwaz weak spot. She would just say the name of the rune, then, and let her fellow seventh years go from there with the Galdr. It took a good minute or two for her to remember the incantation, as well as the shape of Nauthiz, but it finally came to her. Sort of slanted X with little thingies on the ends of the lines? Easy peasy.
"Intaglio Nauthiz Nauthiz Nauthiz Nauthiz Nauthiz..." wheeeeze,
"Intaglio Nauthiz Nauthiz Nauthiz Nauthiz Nauthiz..... Intaglio Nauthiz Nauthiz Nauthiz Nauthiz Nauthiz....... Intaglio Nauthiz Nauthiz Nauthiz Nauthiz Nauthiz..." Wheeeeze. Was it working?
Thin smoke started rising from the Nauthiz rune, and then burning stench spread in the air.