I Open At The Close

Rose Weasley is eighty-nine years old and has been diagnosed with Maskohydious Disease, which renders her due to die in a week. But on her final day, she makes an unprecedented trip to her attic that results in the finding of a certain watch. In her final moments, she opens the watch and when she wakes up, she is... Nineteen and blonde? Ten/Rose with a little Rose/Scorpius