I don't think veggies could cause stasis. I think I've heard not to give them to bunnies under 3 months, but I'm no expert on babies. I'm sure someone here knows what age you can start feeding veggies. However, giving them too soon would (I think) cause runny poop, diarrhea, etc--the opposite of stasis. However, any change in diet should be made gradually, even if your bunny is old enough to eat veggies. There is a wildlife rehabber on the forum (Randy) who knows a lot about the differences between the guts of baby and adult rabbits, and I hope he'll chime in.
Here are some questions you can ask yourself based on my knowledge of intestinal ailments:
Are you hearing any stomach gurgling, especially if you hold her belly up to your ear (my bf and I did this when his dwarf had gas, and we called it "bunny telephone")? If you hear gurgling, I'd suspect gas. You can give infant gas medicine--the active ingredient is simethicone and it is a liquid. Dosages vary depending on your bunny's weight and the concentration of the drug in the liquid you buy. A gassy bunny can be helped by tummy massages, which are just gentle massages of the tummy area. The tummy will also feel more "squishy" than normal.
If you don't hear gurgles, I'd expect the onset of stasis. Do they eat their hay regularly? Does their pellet have a lot of fiber (>20%)? Are they shedding or experiencing any other stress? When you feel the belly, is there a hard mass there? Is there a lot of fur in the poop? Do they drink water? For stasis, the best thing to do if your bunny is still pooping but has smaller poop is to push the hay and fluids, limit sugars (they cancause intestinal bacteria to get out of whack), and encourage exercise. Cutting back on pellets can increase hay consumption, and adding a little vanilla to the water, or offering Pedialyte can help with hydration. Go easy on pedialyte, since it has sugar in it. If your bunnies are old enough to be eating veggies, you can put more water on them to get more water in the bunnies.
If any of the following happens: stops eating/drinking entirely, stops moving around, stops pooping, go immediately to the vet.
Good luck and I hope you can get some help with this!
ETA: you said you just moved--that may have stressed her out. Keep an eye on her and treat with suspicion of stasis.
