Front stage: Front stage behavior reflects internalized norms and expectations for behavior shaped partly by the setting, the particular role one plays in it, and by one's physical appearance.
Sheila is the only black executive, a physical appearance clearly dictates how she’s perceived and she acknowledges this with her statement. She shouldn’t act “black” around her white coworkers because of her own internalized ideologies and this will influence her babe ikr around them.
Hope this helps!