“Sienna is . . . a force of nature. She’s loud. Outspoken. One moment, she would be laughing like crazy, and the next, she’d be crying her eyes out.” A nostalgic smile spreads across my lips. “Sienna loves to pretend that she’s shallow. She posts a gazillion photos on social media, wearing ridiculous clothes that usually make people think she’s a bit whacky. Sometimes, she gives them the impression that she’s not very bright.”