Customer Scamming a full refund or negative review

Ok, I know this is probably not new but it is to me. I just did a huge order. $300. 60 PCs in order. Item arrived quickly etc. Delivery in afternoon. Customer messages me nonstop at midnight (I'm thinking it's an emergency so I look at my phone) half awake they are demanding a full refund for 2 pieces out of 60 that are so blurry in a picture that you can't even see any damage. Claims she can't take good pictures. I said please take a picture of everything and send them to me and we'll move forward. No. She refused. She threatens to escalate to Etsy and leave a negative review unless I refund in full right now. At midnight. Like c'mon? So next morning, I look at her 2 pictures. In the background I see everything on a table in mint condition as they left. I write back. Blew up her picture and showed her. Now she's even more irate and said she's done discussing with me. She will make sure she gets a full refund via Etsy. She knows they promise if she's not happy they'll give her money back. This really sucks. This isn't something that went wrong. This is a scammer. Refused to mail anything back. No more pictures etc. so I reported the messages to Etsy. We shall see. I've never had this happen. Had a 5 star rating every month for 6 years. Not that that really means a lot to most, but I work hard to make sure things are shipped secure and safely. This one really got to me. The economy is already so hard right now- to have someone scam just makes you feel defeated. Thoughts? Appreciate letting me vent. Thanks!