I've been taking apart a lot of this house that was put together with hot glue (what hasn't come apart on it's own) and slowly putting it back together. This is a repair to the right rear which seemed to have been dropped.
The wood was splintered, and rather than cutting it off and trying to tie in a new piece, I squeezed in some wood glue where I could, and made up some Durham's wood putty to fill in the rest. A little tape and a few clamps to hold it. It looks good, and I think will be very strong.