Sorry, but I really don't think she's confused. Break-ups can be really difficult for the dumper as well. That's why she's calling you when she's drunk. But note that's the only time she calls- when she's drunk. That's when she's the most weak and thinking the least clearly. If she really believed in giving the relationship another chance, she would talk about it when she was sober.
I worry that you are holding back from moving on by holding on to hope that she'll come back. It's tempting to look for any signs that the person will come back, so you don't have to completely let go. Yet letting go is what you need to do to heal and move on. It doesn't happen overnight. It takes time. But you need to adjust yourself to the idea that it's over before you can really put everything behind you.
Don't beat yourself up for still missing her. Five and a half weeks really isn't that long for a five year relationship. Just take it day by day. You'll make it through this.
“This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.” ― Douglas Adams, The Hitchhiker's Guide to the Galaxy