Am I being treated like a trophy boyfriend or is she ashamed of me?

Today me and my girlfriend got into a little dispute about me getting a job and I'm really trying but she doesn't understand how hard it is because everything has been handed to her. The job she has was given to her by her mom and the last job before that I had to go out and get for her. I asked her to come over today and she came over with one of her friends. She was acting really weird because every time I said something she looked over at her friend. She didn't come up to me to hug me and kiss me or nothing like she normally does. Then she had the nerve to ask me what did I want her to come over for. I told her that I just wanted to hang out with her. And she said "well I'm here what do you want." It was as if she was ashamed of me or something or she thought I wanted to start something. I didn't get it but it was very embarrassing. Can someone explain this to me
Am I being treated like a trophy boyfriend or is she ashamed of me?
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