The 28-year-old, who takes on Kirsten Flipkens for a place in the final, said that the unpredictable nature of the tournament is what makes it "magic".
She told BBC Sport: "Every time for some reason I'm back here, I have a smile on my face. I felt great right away.
"Tennis is kind of a crazy game, and now I am playing Kirsten Flipkens to be in the final of Wimbledon. So it's also very unexpected, but that's also the magic of it."