Unsure what you mean by “athletic” (I think all rabbits are quite athletic, but personalities may differ in how they express that energy), but the ears do look a bit bigger for a dwarf. She could be a mix or a false — My dwarf was .5kg at about 16 weeks, but growth trajectories can vary.
Regardless of true dwarf or not, I do not think that cage is appropriate. Any housing you have for a rabbit that may act as an enclosure at times you cannot supervise should be as big as possible and allow room for the rabbit to move and jump around. How long is your rabbit going to be in this cage typically?
Unfortunately, that cage doesn’t seem like it provides more than a couple platforms for a rabbit to sit/lounge on, rather than actually move around. One guideline is that any enclosure flooring should be at least 5 times the size of the rabbit when they’re entirely stretched out. I think a platform on that cage is only about 17in long, which isn’t enough space for my dwarf to do one hop across. An easy solution would be to purchase a large Xpen and have it set up around/attached to the cage, while always leaving that cage’s door open. This cage could be your rabbit’s ‘home base’, while the Xpen would provide the necessary room to move around.
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.