frustrated days

Before I graduate from university, i have got a job and now i am in the probatinary period. there is a large gap between university and society. maybe i am still a school girl and i am not fit for the compititive socitey now.i think i meet somehow the most frustrated days in my life. I applied for this job with one of my friend.( i always regard her as one of my best friend.)To my great surprise, i find that she doesn't treat me as friend at all. In university, we are in different dorms, i just learned some superficial things about her, and now after working with her for about one month, i find she is really a hyporcricy.she never says turth to me, she lies to every one. everyone knows that in our society, most of us dislike truth, especially some negative truth, she never says truth to our colleages, but all the colleages like her. I know her than anybody work her. our managers also like her.she always seems so active. she is always ready to ask question.the truth is that she often knows something but she pretends that she doesn't know and ask others.she alwasy says :" I am always regard everyone as friends and i am frank girl and i treat everyone sincerely." on hearing these words, i always feel sick. how can she so dishonesty? I am really disappointed about her. I want to leave this company because of her. she really makes me very frustrated and upset.