Could be life yet. Breaks to love in the second set *1-0. So that's 4 of the last 5 games and had 3 chances in the (crucial) game she lost in that period.
KB had 2 seperate opportunities to break in Zhao's last service game but couldn't convert. Successfully served to stay in the set and now has a 30-0* advantage here.
Tie break. No matter what happens now, she has made a real fist of it and looking at the points has been the better player this set. Looked like it could have been pretty humiliating at 0-5 first set so deserves a lot of credit for this.