The Occupational Safety and Health Administration (OSHA) is a company of the United States Department of Labor. Congress founded the company below the Occupational Safety and Health Act, which President Richard M. Nixon approved into law on December 29, 1970. OSHA's purpose is to ensure safe and healthy functioning circumstances for working men and women by placing and implementing rules and by giving coaching, outreach, education, and support.
She is being honest and direct in this response to a difficult situation. By responding in this way she is letting her friends know exactly how she feels about the situation without being angry or harsh or mean, just direct. With any luck her friends will now understand and stop pressurizing her.