Daisy Weasley is the younger twin sister or Charlie Weasley. When Daisy and Charlie was born Daisy could use her magic when she wanted to. Molly looked it up and found that her daughter was gifted the ability to use magic with out a wond. Molly and Arthur told their kids to keep Daisy's power a secret. They didn't want the Death Eater's finding out and trying to take her to help them. As Daisy grew up she became a healer who worked at the Hospital. She became part or the Order after Voldemort returned.