It can be a long time for poops to reappear, but it is a very stressful thing to wait!
I always refer back to this article, and specifically the part about how it is important to be patient and wait for the treatments to work.
http://www.bio.miami.edu/hare/ileus.html
“It is essential that the caretaker faced with a rabbit in GI stasis be patient, allowing the treatments and medications to work. Rabbits are easily stressed, and excessive handling should be avoided. It may take several days before any fecal pellets are seen, and it may take two weeks or more of motility therapy before the intestine is moving normally again. We know of one case in which a rabbit produced no fecal pellets for 14 days, but finally did respond to gentle, consistent administration of the above treatment regimen. Patience and persistence are key”
It’s really important to continue syringe feeding and supportive care. My vet has told me that even when a blockage is suspected, often the treatment is the same, because you aim to hydrate the mass and push it through with syringe feeding. I would keep giving her watery critical care and encourage movement. Not sure how long her injected medicines last, but pain management is also a really important part of stasis treatment, so make sure she is getting some pain meds. You might also ask your vet about fluids, sometimes sub-q fluids really help.
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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.