<human>: Can you give me a shortened version of the text?

Four days ago, my girlfriend of four years left me without any notice. I am 25 and she is 23. This totally crept up on me and now I'm left just confused and wanting her back. We had just returned from a cruise and seemed happy to be with each other.  And right before the cruise we were looking at houses and talking about exciting things in the future. After our cruise I had to work the next day for 12 hours.  When I came home I new something was wrong. Two of our three dogs and their cage were missing and nearly all of her belongings gone. I found a note on the door with very little explanation. A day or so later she agreed to give me an explanation, which I felt I deserved and I was still left confused. She said she was numb and didn't feel anything and had too many question marks. 

To give a little more context, she had been battling depression for nearly 11 months although I think she hid it fairly well. She even sought treatment a few months prior when she said she "thought about hurting herself". Things got a lot better overtime.. I was upset that she stopped getting help (talk therapy and some SSRI), she still seamed upbeat and positive. Another important bit of info is that she had commitment issues related to her family life, having a bipolar mother and no fatherly figure. I think she wanted to run when things got serious.

Even with the recent difficulty, I love this girl. I'm angry at how she left me but not bitter. I'm not sure what is right to do. I feel like I should give her space right now and portray my self a strong and unneedy but then the other half of me says I just fight for her right away. Maybe it's some combination of the two?
<bot>: Even with recent difficulty in our relationship, I want my girlfriend back.  What's the best way to go about this? Give her space for now or immediately try to fight for her and us?