I concur 100%. It depends somewhat on what sort of papers she's looking for, whether she can get them herself or they are yours alone. If it's joint stuff and she wants help locating or organizing it, she can do that herself.

If it is stuff that she cannot get without your cooperation, you have to decide whether to cooperate, or to tell her that she can't have those papers. In which case her attorney will have to subpoena them from you. This will certainly delay things, and cost some money.

In your current mood, you may feel like speeding things up to get it over with, or making things difficult for her just to be difficult, vs. a delay tactic in hopes of reconciliation. Your call.