Please don't be insulted, but what does she do that makes you think she is a Lab? Is she a doofus?
And I gotta tell ya, she looks like a lot of yellow Labs I know. Actually, my black Lab, Louie, had a Mom that looked exactly like her. Nose coloring and all.
Don't worry, they won't make you join "Labtalk" if you admit it. BE PROUD.