not sure if she is really good in other missions, but she should definitely be the trump card for missions with dragon race. making full use of my gem power boost i managed to farm for her by repeating high-level missions. Although down the track I discovered that lower level mission actually provide more steady stream of points (they call it time crystal 刻水晶 this time). If i like her enough i might get one more: first time exchange for her is 150 crystals, second one (which could reduce the cost of putting her on the board) is 100 crystals.
