😔 Overview
Marietta Edgecombe was a witch who attended Hogwarts and was Sorted into Ravenclaw House. She was best friends with Cho Chang and reluctantly joined Dumbledore's Army, only to betray the organization to Dolores Umbridge.
👤 Background
- Ravenclaw student in Cho Chang's year
- Best friends with Cho Chang
- Mother worked at the Ministry of Magic in the Floo Network Office
- Pressured by her mother to avoid trouble
- Reluctant to oppose Ministry authority
🛡️ Dumbledore's Army
Marietta joined Dumbledore's Army because:
- Cho Chang convinced her to come along
- Signed the enchanted parchment binding members to secrecy
- Never fully committed to the organization's purpose
- Worried about her mother's position at the Ministry
- Felt conflicted about opposing Umbridge
⚠️ The Betrayal
Marietta eventually betrayed Dumbledore's Army:
- Told Dolores Umbridge about the secret meetings
- Led Umbridge and Ministry officials to the Room of Requirement
- Triggered Hermione's jinx on the membership parchment
- The word "SNEAK" appeared in pimples across her face
- Could not speak due to a Memory Charm cast afterward
Consequences
The betrayal had several outcomes:
- Dumbledore's Army was discovered and disbanded
- Dumbledore took the blame and fled Hogwarts
- Marietta was permanently marked with "SNEAK" in pimples
- Her friendship with Cho Chang was strained
- She became an object of scorn among students
🔮 Hermione's Jinx
The defensive jinx Hermione placed on the D.A. parchment:
- Activated when someone broke the secrecy agreement
- Caused painful pimples to spell out "SNEAK" on the traitor's face
- Proved difficult to remove or hide
- Served as both punishment and warning to others
- Was still visible during the final battle at Hogwarts