Hello gentlemen, sorry for the long post. I've tried to condense things but it's still quite long!

I've been dating a girl I really like for a few months now. I enjoy being with her more than any other girlfriend I've had before (which in some ways isn't saying much because I've always known deep down my previous girlfriends weren't right for me), she makes me laugh, likes good films and music and is intelligent. 

However, a few times now I've been on the receiving end of her temper and it's making we worry a bit. Last night things came to a head, which not only upset me deeply, as she at one point basically said she wasn't sure if she wanted to see me again or whether there was a future for us.

To cut a long story short, she started a new job and about a week in told me she felt the head chef/ owner was belittling her and criticising her excessively, making it really unpleasant for her to work there. This continued for a while and she texted me at work, saying that she had been in tears because of her boss, another time that she was unable to cope. I tried to be as supportive as possible in my texts and offered to meet her or speak to her on the phone, if she needed support. I met her late last week and she was upset and started crying when I met her, saying that her boss had been really harsh to her again. I comforted her and said that if working there makes her feel that bad, then maybe she should consider quitting, as no job is worth making you feel terrible.

Anyway, last night I bought us tickets to go to the movies to help cheer her up and things went downhill rapidly. Admittedly I made some mistakes that didn't help things: she got in a mood because I didn't ask her how she was when we met, admittedly I wasn't sure if I should ask, as I knew she wasn't feeling good and was unsure as to whether she would appreciate being asked. Immediately, I noticed she wouldn't look at me and only gave one word answers to my questions. I tried to make conversation as we went down to the platform but she basically just ignored me. Things got worse, when I became apparent that I made a mistake with regard to the location of the theatre and that the subway station we met at didn't connect directly to the stop we needed to go to and we might miss the start of the movie.

By the time we reached the right stop, I'd already asked her more than one if she wanted to see the movie. Eventually, she said she wanted to go home and told me she was upset with me for not asking how she was when we met. I apologised and suggested we go for a drink instead. Things continued as they started, she wouldn't talk to me, sat in silence and gave one word answers when I tried to make conversation. At one point, I told her I was going to leave but tried to patch things up.

Eventually, we decided to leave and she said she wanted to go home. I was walking to the train station with her to make my own way home and asked her if she wanted see me when she came back from a cottage she will be staying to try and make herself feel better. She avoided that question. A few minutes later, I told her she didn't answer it and she said she wasn't sure. She said that it doesn't bode well for our relationship that when I tried make her feel better, I made her feel worse. She also said on a side note that I seem too negative about things in general sometimes.

She said at this point, that she would feel more comfortable discussing things at her house. We chatted along the way a bit and she said she gave one word answers partly because she wanted to sit in silent, which I found odd when you're with someone. 

Once we got to her house, it seemed like everything changed almost instantly. She said she was a 'bitch', which I interpreted as a way of saying sorry without really saying sorry. She became affectionate and basically acted like nothing had happened. I slept over but today have felt really hurt about what she said: before we've almost always had really good times, apart from one or two other occasions when she's also been moody for apparently no reason.

Was she justified in the way she acted? Should I be worried about a girl who said those things to me last night and then acted as if nothing had happened today? One factor might be that she's on her period. How do you suggest dealing discussing this incident with her?

I know she's got a temper on her and don't know if she said what she did about our relationship out of anger. She knows I like her a lot, I always try and support her when she feels down and took her out for a meal last week as a treat but she basically accused me of not caring about her, which she must know isn't true but I don't want to be treated like a doormat.