I am sorry that you find yourself in this situation. In New York, one can sue family members to recover the value of stolen property. You can retain an attorney to serve her with an official letter of demand politely requesting the property back and/or you can retain an attorney to sue her for the value of the glass and custom-made pouch.
You can either sue for the return of the item or the value of the item in civil court. You can contact an sttorney to assist you. You can also pursue a criminal complaint to return the item by contacting the police or DA.
If this answer is helpful, then please mark the helpful button. If this is the best answer, then please indicate it. Thanks. For further information you should see an attorney and discuss the matter completely. If you are in the New York City area, then you can reach me during normal business hours at 718 329 9500 or www.mynewyorkcitylawyer.com.