Twilight Sparkle is fine. She would never intentionally hurt herself. They're just morbid thoughts. Nothing to worry about. She's not suicidal, or even depressed! But Wallflower might be. Should she say something? Is it any of her business?
Sunset was not ready for a premature tragedy to unfold before her eyes, but she must be prepared to accept the end in order to move on and say goodbye to a friend she loved dearly.