Stranger Things: This Tiny Detail About Chief Hopper Will Break You

Later, we find out that she presumably had cancer. In another scene, she's bald and breathing with the assistance of oxygen tubes. Hopper reads her a children's book. On his wrist, he's wearing the bracelet. Again, there's no overt mention of her hair ties or his new bracelet, but it's safe to assume he's begun wearing her hair ties around his wrist (a very poignant show of support, since his daughter has lost all her hair).