Time and space - Need some insight

Hey folks. I've been having a hard time dealing with a "time-and-space-and-I-don't-know-if-we-really-broke-up" situation, and I would appreciate your insights on my case. Last Tuesday night my girlfriend texted me "I'm not sure at all, but I think I need some space. I want to be by myself". I felt my spirit broken in half, specially because it was kind of sudden. I won't lie to you: for the past couple of weeks I had noticed she was a little bit distant, not like the caring, loving girlfriend I used to know, but still, whenever we went out together we were having a lot of fun ("she was really enjoying it" in her words). Then the poisonous message came. I called her and we started to talk about the situation. She said she was confused and that she wasn't feeling the same. She said she needed space for herself, as she started to date me almost immediately after breaking up with her almost-2-year boyfriend. She cried a lot and said that she didn't want to lose me at all, because I was the best. I was speechless. I noted she really never said "I'm dumping you" or "I don't want to be your girlfriend anymore", just "I need space". Anyway, after my s leepless night I texted her early in the morning (she was awaken due to a flight for holiday) and, following McDreamy's lessons, I said "I'm not giving up on you. I know you need space, but I don't want to break-up or lose you". She replied "I don't think of it as a definitive break-up, but we need to think ahead. Everything will be alright. I promise you that. We'll see what happens". It's been five days and we haven't texted each other again. I'm doing the right thing, giving her time and space, although it kills me at times, specially cause I consider her my best friend and I would like to chat with her about a gazillion things. Of course I have tried to continue with my life. I'm not paralyzed at all. It's hard, but I'll continue on with my life. Should I think of it as a "vacation", you know, both of us spending time apart, or should I start to think the worst case scenario (she's done with me)?

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