ramirezframing; I was thinking she was more rose comb than pea or single comb. Her feathers are the same in texture as my RIR but she has the same build as my black australorps.
smarsh & littlecreekfarm; Thanks for the info as I'm fairly new to this and I haven't seen any BLR Wyandottes in person to judge from. My son got her from a small breeder near Chattanooga and thought he was getting a RIR chick but obviously not.
Proudnewchickenmommy86; I was leaning toward a cross with an Black Australorp due to size but she has little else in common with them.
To all thanks for your help!