She might not admit it in person, but her favorite Cougar is Brandon Davies (I must admit he's one of my favorites, too). One time last season, I was watching a basketball game at her house and she was jumping on the couch while chanting, "B-Y-U! Davies! Davies! Davies!" What a cutie.
My sister Carolyn (her mother) told me that she now requests the "B-Y-Cougars song" at bedtime and sings the alphabet as "A-B-C-D-B-Y-U!" That's definitely the way it should be!
One day when she was running around the house singing the fight song, Carolyn asked her if she was cheering for the Cougars. Mattie replied. "Yes. I cheer for lots and lots of Cougars!" Here is some video evidence of her undying loyalty. I love this little girl: