4 months! In my eyes, she is well overdue. If you think you're anal, I wax my Aurion every Sunday .
Personally, my recommendation would be to give her a good clean with a good car washing liquid that is made to prepare the surface (ie. strips wax), then clay her thoroughly, after which you can swirl treat if necessary/desired, followed by a polish (once again, if desired), then a good wax.