Tell your husband the ring was mailed back, but you don’t want to revisit the trauma of what happened. So you want to sell the ring at a pawn shop and donate the money to a domestic violence shelter. Hold firm that you do not want to revisit what happened, you do not want reminders of it like the ring, and you do not want to work to find the person who did it, you don’t want to waste anymore time of your life on what happened years ago. If he has trouble accepting this, schedule couples therapy asap. It’s your trauma, only you get to decide how best to process it and move forward. I’m so sorry this happened to you.