For anyone interested, here is a link to some amateur footage from Laura's match yesterday. I think it is the first 3 games of the match, no clear evidence of why her performance might have dropped off so badly after a solid start, only that she looked a little bit less sharp than she would do normally.
Both Wozniak and Dellacqua won their QR2 matches. Wozniak 6-3 6-1, Dellacqua 6-3 6-3. Having thought about it a bit more, I really think Heather is finding some better form, just didn't take her chances yesterday. Lack of wins probably why she didn't take the chances.