If it was me I would take all my stock back and charge her your percentage for any missing unpaid pieces. IMMEDIATELY. No good is going to come from doing business with someone like this. 

Is she insured? Are you insured for the pieces you consigned to her?

If not then as I said I would just take eveything back and cut my losses. I really feel for you, Artisans are often taken advantage of by unscrupulous vultures like this woman.

I also wish you much luck going forward.