It looks like you're referring to from the Judge Dredd universe (primarily the 2000 AD comic series, not the 2012 Dredd film).
Here is a concise, proper-text summary:
If you meant a different character (e.g., a fan-named character from the 2012 film, sometimes mistakenly called "Vanessa" due to the actress Olivia Thirlby's role as Judge Anderson), please clarify. Otherwise, the above refers to the canonical comic character.
is a supporting character in the Judge Dredd comics. She first appeared in 2000 AD prog 446 (1985). Blake is a tough, competent Street Judge who often works alongside Judge Dredd. Unlike many judges, she displays a pragmatic but less grim demeanor. One of her notable storylines involves being critically injured and later receiving a prosthetic limb, after which she continues her duties effectively. She is not to be confused with Judge Barbara Hershey (from the film) or Judge Anderson.
