Well, the main reason why the talk didnt go anywhere was cause it was way to short? U called so unless she is in a hurry which she aint, then you should continue the talk.
I usually talk about anything and everything when Im on the phone with a girl. every line that she says can be flipped over and used to start a new thread. (Yesterday I had a convo about freckles going for about 5 min before I switched subject

)
For instance.
1 she woke u up didnt she? so then she needs to make it up to you. ( u sorta tried and fished for it but she didnt really bait it. get back to the topic later, always good if u can have several threads up.)
2 she said something about a beautiful day, talk on a bit about that, some birds that uve recently got as ur new neighbours or something and how they was the/ reason why you couldnt go back to sleep/ ReaL reason why you woke up so early.
3 shes tired from to much partying, that reply u did was ok, but u shouldnt have ended the convo there, spin on.
just basicly hook on anything she has to say and make it interesting.. remember that u build comfort, and when u get things going on the phone and maby get a fade in conversation from ur part, she will gladly try to come up with new subjects (invest in the convo) since its fun talking to you.
btw ... Why would u be a creep for calling her ??!?!?
Thoughts ?