"two police officers who she says claimed there was incriminating damage on her vehicle"
"But her car is a different color"
Common police tactics, and generally legal, but not very ethical.
The claim of evidence, whether it is true or not, is a common interrogation tactic, intended to elicit a confession. This is when you, the accused, either demand a lawyer be present to represent you, or clam up and invoke your right to remain silent (and let them prove their case on their own).
The mistaken color is another common police tactic. They know eyewitnesses often get details wrong. Color of your car? Easily mistaken. Or not. Advice above holds here also, lawyer and clam up.
The police generally are motivated to solve cases and close the books. Let the courts figure out true guilt. When you are being questioned, or are detained, you cannot trust them AT ALL. They are no longer serving you. You are their lawful prey, and they will pursue you.
I hope Liz makes them pay enough to deter at least one. But I doubt the police will change one bit.