Jessie comes back to earth 1 and so she will carry on being the third speedster but the only girl speedster but in one of the missions agents weather wizard ( he got broke out by captain cold) weather wizard made a lightning bolt and struck Jessie but if Barry wanted to he could go back in time and save her from being killed but earth2 wells shoots weather wizard in the back so Barry can go back in time and save Jessie and so he did go back in time and save Jessie but in that result he got struck by lightning so kid flash went back in time and saves himself Jessie and Barry.