I have a 0-6-0 with a slopped tender that I got in the Yard Boss starter set (https://estore.bachmanntrains.com/index.php?main_page=product_info&products_id=5261) .  Unfortunately the kids managed to break off the rear coupler.  It looks like the coupler is housed in a box enclosure that then snaps on to the chassis of the tender, but the way to broke off is not lending any to any answers on how I can remove what remains to replace it. 

Does anybody have any experience with replacing the rear coupler and/or a assembly diagram I can use?  I'm attaching photos of what it looks like now.

https://www.dropbox.com/scl/fi/351hd4csewlzldzge4ou5/2025-04-22-23.42.45.jpg?rlkey=yeb8nthlgbpd3aj9mgpw89mqx&st=rhck4wcb&dl=0

https://www.dropbox.com/scl/fi/y4xqtym61u4xgae0awaq9/2025-04-22-23.44.30.jpg?rlkey=jn90gh6r9pgqujyja30xq24ye&st=cessza7j&dl=0

https://www.dropbox.com/scl/fi/dxjq9ejfi1vktg2bycwec/2025-04-22-23.44.37.jpg?rlkey=5e0nmw4ny1lgq6corjfjbg2b6&st=cgh9k1qq&dl=0