Well I have to say I don't think there's much more you could have done mate. She still might come back to you so just leave it now and if she does she does, if she doesn't then so be it.
We'll probably see some photo's of it in a few weeks with a thread titled something along the lines of "can I withhold payment over this poor quality work I've had done?" and the pictures will be of a ceiling falling in, really badly prepared walls with tiles stuck on with grout and grouted with adhesive and, well, you've seen the threads.
I'm with Mike on the pestering thing though mate. Could have shot yourself in the foot there a bit. If you do ever need to call try to say you're just calling as the week they wanted it done might be filled in with another job if it is they're still undecided. Or something like that. Gives 'em a nudge but doesn't put them on the spot.