What the cooler-than-a-cucumber Team Flash member learned from her mom is something she’d have learned eventually anyway: the more she uses those Killer Frost powers, the less she remains Caitlin Snow.
In the last episode of The Flash, Caitlin took a trip to meet her mommy dearest, a driven-by-work scientist played by Susan Walters.
And of course it’s going to be an effort to save Barry from something that will be the straw that pushed the frozen camel over, thus shattering it and breaking its back.