Just because you can doesn't mean you should. First, read my other reply in this thread re: the letter and the claims you plan to make in it. Second, depending on the course of action you intend to take, corresponding with the court in that manner may be to your detriment. If the correspondence is deemed an answer to the original complaint, you'll be dragging yourself deeper into an Indiana case when you should be trying to get it dismissed (as my post instructed you to do if that's your intention).
Court clerks are not usually trained legal professionals (though they might be, it's not a requirement), and they cannot give legal advice.