Those in Human resources help me out w/some insight!

I am a new grad and of course don't have any experience. I know a few people on here have posted before about being in HR or in a position in which they interview candidates for a position, and I was wondering if you could please give me some insight(im begging!!!!) so here's a few questions I have but please feel welcome to reply with any tips of information. I have had one interveiw in my entire life- its was about 3 weeks ago.(every other position I have ever had was done by getting a job through someone i know or a family friend) I was so nervous- because I didnt know what to expect or what to ask. The woman who interveiwed me did such a great job explaing about her facility, that there honestly was no questions I could ask, she was very thorough! I did seem interested and made comments throughout her speaking to me. I was then brought on a tour and interveiwed by a charge nurse on another floor. When I came back to the original person interveiwing me, she had asked if I had anymore questions, i said no I felt she did a very good job explaining everything- she had asked if my references were availabe to be contacted that day, I said yes. SHe said ok well let me check your references out and youll be allset- I fet like I had had the job! The other person I had interveiwed with said she liked me and it was just a matter of convincing the head interveiwer(the director). I sent a handwritten thankyou card on the 2nd day after my interveiw. I called a week later, she said they were still reveiwing information adn hadnt made a decison yet. About a week later I had sent an email stating I was wondering what the status of my application was(because i knwo she hasnt called my references yet) and if it was possibe for her to contact me via email or by phone and let me know a date she is expecting to make her decision or if she has already( and i am not it i would just rather no! so i am not bothering her and having my head up in the clouds). She never emailed me back. SO I called on Friday, later on in the day (that was 4 or 5 days ago) and left an email sayi thank you for interveiwing me, I was still very interested in the position and was wonderin gif she could return my call as to when and if a decision has been made. So in total its been just over 3 weeks. Still havent heard back from this person and I am not sure if i should call back, and if I should I dont knwo what to say, as I have sent her an email and left a voicemail with her sayin gbasically the same thing.

So do you think I have held onto hope for too long? I am looking in the mean time but i am really interested in this position, I love the facility and the enviroment and the people- I feel i would get a lot out of this position- and would put everything I had into it. What tips do you have for interveiwing as a new grad- what to say and what not to. What should be on your resume and what shouldnt- why do you get rid of soem applications adn not others? Why is it that you tell soemone you are going to contact their references and then dont? I felt she had really liked me and now I hear nothin back. I am getting very frustrated and would appreciate some insight!