Well done, I do know about that site. I see there is a section 10c and grave 205. A 3rd class grave, I think that meant it was a plot that was allocated and not a chosen plot which would be a higher class.
I can see her husband had a sad end just a few years later, perhaps there was never a gravestone erected.
Perhaps you could find a gravestonein the index close to that plot and it might help to locate the area.
We have an excellent search index and the original burial registers in my local Cemetery , it's amazing what you can find.
🙂