former tenant sends lawyer letter over security

[Lee L.]

So, long story short, I am confident that my with holding of a portion of the security deposit was correct and accurate, and that it was done in the lawful time frame. 

I get this letter saying really a bunch of nothing, asserting that I willfully with held the security so now I owe them double security and if I don't pay them by X date they are authorized to file suit in Vermont SUPERIOR court.

So, can they actually take this to the superior court as even if they were to tack on lawyers fees I can't imagine it would make it past 5k?

As it is a letter, and there is literally no way in hell I am giving that awful person 2800 dollars, I am thinking I will just ignore it, if they actually file suit I will just answer that, unless someone has a good idea otherwise.

I think it would have to be small claims and they wouldn't be entitled to lawyers fees and this is just a big scary lawyer lie, but I am interested in what other more experienced people think.