I used to work at a place like that. I remember the first day I walked in I began to say Hey to everyone and they just kept looking a whatever they were doing. NO good morning, no hello, no nothing! Blew me away! I continued each and everyday to greet everyone and make sure to tell them goodbye as we all left. After a month or two, they finally caught on. It was amazing how they didn't realize how stuck up they seemed by not acknowledging each other. Before I left 5yrs later, Several told me how much I improved the atmosphere with my bright attitude each day. SO tell your freind to be her happy self and continue to greet each one each day. She can change the entire office to a better place with just a hello each morning.