Susan pauses, sorting through her conversation with Grantaire and Sagramore earlier that day; it occurs to her, in the process, that she's left out some pertinent details. Perhaps she oughtn't bring this to Lancelot's attention at all? But they're his friends; he's better equipped to ensure their well-being than she is. "I believe they depend on it," she says, carefully. "They made it sound like it has become something they require for their health."