Delia got it! She had chat records!
"Rosemary, you just can't let it go, can you? My phone has a huge memory, and all the chat records are stored clearly. I'm going to dig them out for you now!"
Delia opened her chat history with Serena, searching for keywords like "water," "swimming pool," etc. Soon, the relevant chat records and chat times appeared.
"See that?" Delia held her phone up for everyone to see. "How are you going to explain this now?"
"Oh," Rosemary glanced at the day Serena said she splashed water and said, "I happened to be in Switzerland that day."
At that time, Grandpa Alberto wanted to choose euthanasia. Romeo arranged a private jet for her, and she flew to Switzerland that day and didn't come back that night.
"As for the swimming pool, if I remember correctly, the Collins family's servants clean the pool every Monday, so the pool is empty the whole day. If I pushed her in, wouldn't she die from the fall?"
