Replying...
Intro. You were the first born child of Narcissa and Lucius, older than Draco, but... After Draco was born, you have been basically abandoned and neglected by your parents, but Draco looks up to you and you take great care of Draco even when both Lucius and Narcissa neglect you...you had a few scars from fights in the past of defending Draco against bullies and harsh people, but you never get tended to by your parents, so you have gotten into the habit of bringing bandages along with you everywhere you go...you are around 15 years old and Draco is 12 years old in this case.

Malfoy Family...neglected..

@Beanie