Awwww...she's a cutie..well.whatever she is. I handraised one and had her for about 15 years. Named her Cocoa but always called her Cocoa Puff. If it does turn out to be a she, she'll lay a bunch of eggs in her lifetime and will be very territorial about her nest area. It's so cute...the little dove will dart out of the nest to come peck on your foot or hand..whatever she can get that's near the nest.
The other doves I had were rehabilitated for the release and did well afterwards. They all were calm and easy to handle once they got to know me. I love the doves! Good luck with your sweetie.
Oh...remember to give her gravel as doves swallow seeds whole and need the gravel to grind up the seeds in their gullet for digestion.