A juvenile wild dove flew into my window & hurt her wing. What should I do?

She looks like a juvenile b/c she's about 1/2 the size of the adults we see in our yard every day. When she tries to fly she nose-dives and lands on her face. Other than that she seems fine. We have lots of wild predators outside, coons, foxes, cats, etc. esp. at night and it's late evening right now. What should we do? She seems very calm, lets us pick her up, is breathing fine, and is sitting in a cage right now quite comfy, but has trouble flying each time we let her try.