Well, they did make the WCWS with her in 2015. If you're taking about 2016 and 2017, it really depends on how dialed in she was. She didn't hit as well as a sophomore as she did as a freshman while mourning her friend and feeling pulled back toward home. She didn't have great numbers at Cal after she left, but you saw flashes of what she had done here.
I don't think she would have made enough difference in 2016 because that came down to just being out of pitching once Gaffin broke her arm in the SEC Tournament. Once that happened, it was just Gabriel and Moss, who were both also dealing with injuries. Maybe her bat keeps UT out of the loser's bracket in the Arizona game in the regional, but it still would have been a tougher road, considering you didn't have Gaffin's bat either.
In 2017, if properly motivated, she could have provided that one more hit to get UT over the hump and our of Supers.