Welcome to the world of being obsessed with bunny poop! It’s a requirement for bunny parents 🙂
It’s common for young rabbits to produce extra cecotropes (soft poops that they usually eat straight from their bums) because their diet is more rich. Excess cecotropes can also happen from a diet change (such as a switch in pellet brands). If not eaten right away they can get smashed together and look like a log, as you described. Rapid switches in diet can upset the gut as well, especially in a young rabbit, so any changes in diet should be done gradually.
Here’s a handy guide to bunny poop since you new bunny parents: https://imgur.com/a/5N4lD#ra2RfjI
If she is still eating, poops should follow. Has she produced any normal poops since you posted? I would add timothy hay into her diet as well. Grass hay is very important and it’s good to develop good hay eating habits while buns are young (so you can give both timothy and alfalfa hay, or some people prefer to just feed alfalfa pellets and timothy hay).
Sitting hunched could indicate a bit of gas, so you could encourage movement and try giving a gentle tummy rub. Keep encouraging her to eat and to move around a bit. If she passes normal poops then my guess is that it was just some extra cecotropes.
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The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.