Depends, do you want the stuff so you have it, or just so she doesn't have it? If you want to get it to make her life more difficult then don't do it.
You shouldn't take any action because of her, anything you do should just be with you and your son in mind... You don't want to play games, it will not help you move forward.
M - 9 1/2 years 5/5/16 - Bomb drop - 3 week EA 10/31/16 - We sold house 01/10/18 - D Finalized