Heartstopper is a book I turn to more for quiet, thrilling, happiness but Oseman's foray into the darker bits of mental illness can't be denied its quality. She does a touching job of relieving Nick his survivor's guilt through conversations with his mother. I think anyone dealing with a friend or lover with significant mental illness can learn from his experience. I still silently wished Heartstopper could stay its gay fluff but as a survivor of an eating disorder, OCD, and depression/anxiety it was both trying and triumphant to see myself on the page.