>>544047551
I think you're just grossly underestimating wide range MSR, and her applying chill to anything that attacks her. That and we don't know what her module will do on stage 2/3, it'll either buff the snow tiles or buff the chill reflect.
Although there is a possibility that the numbers aren't there and her best skill is S2 and just turning the floor to cancer from a distance, especially if the module hits that talent. Which wouldn't be gamebreaking, but would be very funny (to me)