if it’s a bunny that is larger than a tennis ball, and its ears are upright, it’s old enough to be on its own
Best option is to release it back where she found it and keep an eye on it if she’s worried about the cat again.
Also if she has some greens like arugula, clover, basil, cilantro, or any lettuce except iceberg available those will sit better in the bunny’s tummy than carrots which have too much sugar.
Per the Minnesota Wildlife Rehab Center, if she’s certain the cat never got it:
Best option is to release it back where she found it and keep an eye on it if she’s worried about the cat again.
Also if she has some greens like arugula, clover, basil, cilantro, or any lettuce except iceberg available those will sit better in the bunny’s tummy than carrots which have too much sugar.