Does she want space, or not want anything?

My girlfriend and I have been together for a few years now. We moved in together last year, and due to us both being really busy and having other commitments, I particularly didn't give her the attention and recognition I should have. Something kinda happened between her and another girl, but didn't go anyway as she was being led on. In the midst of this, we split up, but seemingly begrudgingly. Feeling like I can forgive her for not opening up to me about this at the time, and thinking we could get through it, I suggested we gave it another go. Her response took 15 minutes, but I suspect only really because she didn't want to go away and think about it and wanted a decision there and then. Now we're half back together, taking it easy, and with a few conditions if you like. I'm putting more effort in, and because I want to, not just because she needs me to. But I feel it's going in the opposite direction - she's not wanting as much back. I can leave her house in the afternoon saying, "Text me later?", both of us in a great mood, then she'll go out until the late hours of the morning and not text me to even say she's back, leaving me worried, particularly when I send her just the one text at 4am, an hour after I think the club's shut, seeing if she's ok. She did find time to ask a friend for a ticket to go out tonight in a drunken text though. I can't do much more because I said I wouldn't over-do it. I know she's not 100% sure about us at the moment, but I'm struggling with the balance of demonstrating that I really do love her, I care about her and about us, I really want it to work; and not over-powering the situation and suffocating her. I know she says it could take a couple of months to feel the same, and that's fair enough, but I'm really struggling to demonstrate all this to her without mucking everything up. In the few days we've been back on, we've spoken a couple of times about this, trying to communicate more and be more open, but I don't know if she's just too afraid to tell me that she doesn't want it to happen, or if it's just the case that she needs some space and wants to start things easy working back up to what we had? I'm crazy about this girl, I know I've spent a year of more being a fool about our relationship, but I can't explain how much I truly believe we have something special and want it to work out? I don't normally ask for relationship advice, so go easy on me TSR :)

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