So she made a tentative deal, but it's been weeks 
since you've heard from her?  You posted about 
her before your computer was hacked, so it's been 
a bit of time.

I'd be nervous about putting it on eBay already, 
but if she hasn't paid yet, nor can you get in 
touch with her, it should be okay.  Just use 
PayPal's refund process if she DOES pay later.

I'm pretty sure she'd contact you before sending 
payment, though.  Just tell her family matters 
came up and you couldn't get through to her.

Kristina