Well Serena's playing better now than Jennifer was at RG 01, if I recall correctly, so you could say that was a better chance for Kim. There are probably others which escape me too.
But she's 19 for goodness sake. She's at the start of her big chances, not the end. Of course she'll come back and have more chances. Other players have come back from much worse losses and Kim has more maturity and perspective than most 30 year olds, let alone 19 year olds!