GI stasis is a symptom, as it is a state where the GI system slows down. This is always caused by something, whether because of gas from eating something that upset the tummy, stress, pain, etc.. If the GI stasis was caused by something that will occur again, then yes, it will likely happen again. If it was a one-time thing (which happens; sometimes rabbits get gassy and us owners aren’t sure what happened), whether it will happen again is up to chance. It’s essentially the same as asking if a human has an upset tummy, will they be more likely to get it again in the future— if the upset tummy was caused by a bad food and you keep eating it, yes! If it was a random upset tummy and you’re unsure what caused it, who knows.
If she is eating hay and greens, that’s a great sign. Poop is an especially great sign. These are all signs that your rabbit’s GI system is moving, as opposed to being stopped/slowed down. If in total it seems like your rabbit isn’t eating enough, you can feed some CC. Nothing bad happens from eating CC in the short term, especially since your vet didn’t identify your rabbit having a blockage. I actually gave one of my rabbits a ton of CC on top of their normal diet for over a week to get him to gain some weight. Again, if you’re concerned, offering CC is fine.
In terms of how long it’ll take for her to recover, hopefully you should see her bounce back within a couple days. If things are still sluggish, I would consider calling up the vet and reporting on what you’re seeing.
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.