At first, Juno tries to act like a caring, well-intentioned, and kind person. She hopes to repair her friendship with Sarah, even apologizing for walking away from her friend when she needed her the most. However, Juno's solicitous behavior is more of an attempt at a quick fix rather than a meaningful solution. The real reason she wants Sarah's forgiveness is because she had an affair with her husband. Juno is more interested in reconciling with Sarah to mitigate her guilt rather than actually work to understand her friend's pain.
As a result, Juno decides to cut corners. She takes on the responsibility of planning their cave-exploring trip. When her friends check in with her, Juno lies and assures them that their route has been fully explored and marked safe. However, she secretly leads them into an unfamiliar part of the cave system. This turns out to be a manipulative attempt to create a "bonding" opportunity between her and Sarah.
After navigating a particularly narrow passage, the women become concerned about their planned route. However, before they can assess their next steps, a portion of the cave collapses behind them, blocking their exit. It is only when her friends argue that they should wait for rescue that Juno reveals the truth. They have to keep moving forward and find a new way to escape because no one is coming for them. It is Juno who sets off a devastating chain of actions that prove fatal.
