Extremely stinky dark poop with high moisture content (not cecal) and swollen abdomen

[Wyorp Rock]

I'm glad your were able to see the vet, that's good news that she had no parasites!

Are you having a lot of warm weather, been giving anything extra watery (watermelon, cucumber, tomato, etc.) or changed their feed in any way?

I would just keep watch on her, see that she is eating/drinking well and see you it goes.
Thanks for the update.