Maybe Ostapenko more, in that year Myskina was playing really good tennis. I remember watching the event. So far, Ostapenko has also achieved less.It would have been like Ostapenko, or Myskina.
At Wimby it's Marion Bartoli for sure, in 2013.
One tournament wonder again was Pennetta in the 2015 US Open.
At the AO it's Sofia Kenin so far but maybe she will achieve more.