Well, I am an attorney going into nursing and I have a different opinion. I think your skills would be very useful, but you need to get to know the people who will make the decisions in the firms. The person was not one of them and was probably threatened, since you know more.
Have you joined the professional association for nurse consultants? I hear that there are a number of useful resources available to members to help you target potential clients. Also, the areas where nurse consulstants would be extremely helpful is in personal injury or wrongful death cases, other than medical malpractice. Sometimes lawyers just need someone to review a file and explain what really happened or what should have happened. There are many small firm and solo practitioner lawyers who do this and could use your services. They may not hire you as an expert, but you would be working with them to understand their case, and getting paid well.
IMHO, if the lawyer was in a state where medical malpractice case damages were not limited [like they are in CA], I would think haveing someone like you on staff would be a tremendous resource.
How do you meet the lawyers who will hire you? I would join the trial lawyer bars [trial lawyers are the lawyers representing plaintiffs] and attend their networking events, go to their cocktail parties, and get to know people.
Here are some links:
is The American Association for Justice, the national trial lawyers organization.
is the California trial lawyers organization.
is a public interest law firm and foundation made up of top partners from plaintiffs firms all over the country. Joining this group will enable you to get to know the decisionmakers at a number of different firms all over the country.
Check out the websites and see what interests you. Don't let the gatekeeper turn you away.