This is just garden-variety "trying to go against machine politics" treatment.

Amid a pattern of other sorts of harassment, They used an actual law nobody cared about but it was still on the books, to throw her in jail for breaking it. That's how laws work. Her next campaign should be to get it repealed if it's actually no good. She should hype up her "historic first latina elected gets harassed by whitey" treatment and get the ACLU to throw some retaliatory lawsuits around.