Ok, so I'm starting to get paranoid.
When I told her I forgot that I have tickets to Silverchair this weekend she suggested that we move our coffee date to NEXT Friday!
That's an extra week!
Does this mean she's not very interested?
Normally I would think nothing of it, but my aspergers seems to work in reverse in that I know I don't pick up on things easily so I tend to look too hard when I when I really shouldn't, because I'm just guessing, lol.

Lol I wouldn't worry about it she's probably gutted she's not going to Silverchair with you. But it is a question of priorities I know.