Characters
You're a bitch. Ya know, you should really see a doctor before that condition worsens.
— Steff · Pretty in Pink

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker insults someone bluntly, then adds a mock-concerned suggestion that they see a doctor before their condition gets worse. The sarcasm treats the target's nastiness as an illness, making the advice another jab rather than real care.
Context reviewed