It's funny, but law school doesn't seem to offer "ethics" even as an elective.
They do, and the vast majority of attorneys take ethics seriously. You have to both take and pass an ethics course as a requirement to graduate law school. There's also a standardized exam for ethics (the
MPRE) which is required to become admitted as an attorney. Attorneys are required to abide by the
rules of professional conduct, and are actually required to snitch on each other if we find that another attorney has "committed a violation of the Rules of Professional Conduct that raises a substantial question as to that lawyer's honesty, trustworthiness or fitness as a lawyer." (Rule 8.3)
In addition to ethics issues in the practice of law, Ms. Choi's actions also could be considered spoliation of evidence, which is a separate cause of action in itself. Ms. Choi could potentially face disbarment for her actions and could pay out the nose for damages.
(source: I am an admitted attorney in New York, and I both took and passed my required ethics course and the MPRE. colorado will probably have similar rules)