Ignoring is not passive and weak. Giving in to her unreasonable demands is weak. Talk is weak. Ignoring is an action that will drive her nuts if you don't give in. That is strong.
Is the item yours and you can prove it? If so, she can't legally keep it without your permission. Ask your L what to do if it is important to retrieve.
Me:49 W:45 M:19 T:22 EA confirmed and ended 8/2014 S:19,17 D:9,5