Justine will continue to "violate" Serena
Justine really played badly but was still able to beat Serena with so many double faults and the worst first serve I've seen for a long time. I'd say that Justine was playing at maybe 50% of her best.
This shows that mentally, Justine now has what it takes to beat Serena on any surface, even when she is playing badly, even when she is tight.
My prediction is that Justine will now continue to beat Serena on the hard courts also.
Bad behaviour and faked injuries aside, Serena put up a big fight, and it was a lovely match to see.