How to determine age of rabbit?
For most animals, it is typically done by looking at the growth of the teeth, but I guess that wouldn’t work in this case with a rabbit. I do not think there is a really accurate way of estimating the age. If you have lots of experience with rabbits, of ask someone that does, you may get some clues based on the shape of the body, skin, eyes, etc. Also, if the rabbit was spayed, or is going to be spayed, a vet will probably be able to guess based on the condition and size of her organs, but still, it would be rough.