How to keep a chick interested when im going on vacation?

So i have met this girl online that i like, she likes me, that is obvious and we have agreed to have a date... Only problem is that i am going away in a weeks time and neither of us is free before then. I am going on vacation for 8 days and will have no contact with her...

Two questions:

1) What is the best way to keep her on the hook before i leave?

2) How do i bring back all the rapport, attraction and comfort i have already created by txting/IM gaming her quickly before we go on a date?

Normally i would transition quickly and there would be no downtime, so i am worried if this might lose me her... thoughts?