<human>: Can you succinctly summarize the text in 1-3 sentences?

Hi Hivemind,

I have a problem, and I need opinion of a someone smarter than I am in relationships issues.

So my exgirlfriend is visiting my city, and she asked for a place to stay for a weekend, on Sunday she is living to US, for couple of months.
I gave her my apartment, and I found an excuse to excape to my officec for a weekend, so I won't be forced to see her. My initial plan was to go to a conference for a weekend, but it didn't worked out.

Anyway she needed some help with a phone, so she asked me if I can swing by to help her to a restaurant she was in. I went and solved the problem, while there she was saying things like you should sleep (I'm on poliphasic adaptation right now, so I barely sleep, and you tell when you see me that I really need some sleep :D, but it's not true actually, well different story), in your apt she will take a couch. 

Well she made few jokes like this, but eventually I needed to run. Because technically some part of don't want to experience her in presence, email is fine.
But some part of me thinks it is somehow cruel. After all we were in some ways fanstastic couple, and I realy liked her. And she was somehow sad when I was leaving, I have a problems with picking this kind of a signals up, but I'm pretty sure she was sad.

So here is my problem please give me some hints what is normal course of action in situation like this. I somehow feel this is the last time I can talk to her, we will see each other in couple of months for sure.
<bot>: My ex-girlfriend is in my apt (I agreed before of course), I'm in my office. And planning to stay there till she will leave (two days). I wondering what I can do better with this situation.