Stone recalls watching her mother brave chemotherapy for 25 weeks as a “really difficult, terrifying time.” And it included a major lesson: “To me, as her daughter who was not going through that incredible struggle, I had this insane amount of clarity. My mind is so muddled all the time with the past and the future, that it was like an inexplicable jolt into the ‘now’ the whole time that she was going through this. Because I realized — all you have is the present.”