In the very second panel he mentions that she's a native. Since the story is set on planet Klo it means she looked like a small pink goblin - the planet appeared in the old marvel comics once.
[link] And speaking of the comics... Sludge befriended reporter Joy Meadows in the UK G1 comics back in the day and nearly got her killed by the 'cons when she planned to go public with her proof that not all the giant robots were evil. This story no doubt homages that relationship.
The name on the headstone is Sluj - it could be her natural spelling or an indication of Sludge's stupidity that he can't even spell such a simple word as "sludge" correctly