Wild Chicken of some variety?

So, we had some friends that live deep in a very strict community/neighborhood/whatever.  They cannot keep chickens there.  They told us last week that a little hen had made a home in their backyard, and that she was wandering some of the neighbor's yards as well.  No one would claim her, and they were planning to get animal services to come catch her.  We spent 5 hours over at their house and managed to catch her in 45 mins.  Of all the birds I've had I've never seen one so wary of people, makes me wonder if she was originally from one of the communities not far from the subdivision where they raise cock fighting birds.  Additionally, I have never in my life seen a chicken run with the speed this one moves.  I'm thinking she's been snacking on drugs (just joking).  Anyway, I knew she was on the small side when we caught her.  She's almost half the size of our RIR hens.  She's a scrappy little thing though, and holding her own with all the others after we added her to the flock today.  We are wondering what Breed/color you think she is.  She's not laying any eggs, so I don't know if she's not old enough, if she's just a tramatized bantam breed and she'll settle down to laying again before long, or if we actually have one lady like looking rooster that never crows.  What say you...

Thanks I was guess Wheaten.  If she's a game hen, is this as big as I can expect her to get?

Really you think a Cubalaya?  I thought they weren't suppose to be able to hold their tails alert (up)?  I thought they generally had longer tail feathers too.