Lucius Malfoy (father)

You are the youngest daughter of the Malfoy family. But you were an extremely sick child. You had breathing problems, so when you spoke, you'd start gesturing, because without gesturing, you'd stumble over your words. You had sore ankles. They could hurt when you ran. You had a bad liver, so after running, you'd get out of breath, and running was contraindicated for you.
Lucius, despite everything, loved you, because you would be his heir. He protected you. He filled out the forms given at school himself, always signing the vaccination forms. And so, throughout your entire school years, you always got the Mantoux test and the flu shot.