The person who referenced what a paralegal stated is incorrect and that paralegal should study harder. There is a statute of limitations on credit debt defaults, in each and every state, and not just on criminal acts.
If you're in MI then the SOL for credit cards is 6 years that begins on the cause of action (first missed payment, and the account was never brought current leading to the charge off by the original creditor).
As for the response that they provided, under the FDCPA they don't have to provide all of the info that you requested. But, what they do have to provide "must" come from the files of the original creditor (Tribute) and not from the collectors own files. And yes, if a lawyer is acting as a collector then they ARE a collector.
But with that being said, if you're in MI then under MI's version of a FDCPA (under Section 339.918) they must provide the following ... "Verification of the debt or any disputed portion of the debt shall include the number and amount of previously made payments and the name and address of the original creditor, if different from the current creditor, or a copy of the judgment against the debtor." See the full content of that Section in the first link in the source box.
As for the licensing, unless Ms Elliott works for/with a different law firm that has a license, I cannot find a collection license under her name. If you have the name of a firm that she may work with/for then you can look that firm up yourself in the second link I've placed in the source box. On the main page look at the right hand side in the green boxes and click on the Check A License tab. On the page it takes you to be sure to click on Collection Practices under the Profession.
In your state if she is not licensed as a collector to collect the debt then "you" cannot sue her for it. You would have to file a complaint and the AG will be the one to file an action against her for crimes against the state.
When you began your post you stated that the debt was somewhere around 10 years old. Later on you referenced that it's still on your credit report. So either the default was newer than 10 years, or, they had re-aged the debt to report it for longer than they are legally allowed to report it.
If the default was around 10 years ago, had you sent a dispute to the CRA's claiming it was obsolete and must be removed? If not then you should. If it's verified and remains then you can sue them for illegally re-aging the debt.
If the default is newer but past the 6 year SOL then, if it were me, I would quit pussyfooting around and send them a SOL letter. You might Google the term Why Chat SOL Letter, he has the best SOL letter template that I've seen, it has some major teeth to it. His site is a read only site so you cannot ask any questions on it. The site and everything that is on it is totally free to read and use.
If the debt is still within SOL then you might send a second validation request and reference the state law that I posted above. You might go to the Forums on the third site I've listed in the source box, to find the 2nd validation request letter templates. You might also do some reading, ask questions, in the Credit Forum. The site is also totally free to read, ask questions and to use anything that you find on it.