Which sentence from the text best expresses sydney's development in the story? "'i haven't even had time to get used to the new back door yet,' she thought as sophie disappeared upstairs.""sydney had never felt happier than she did in that moment as her mom raced down the stairs and with charlie.""'everything that matters to me, everything that can't be replaced, is already here; i didn't need to bring anything else,' she said." "sydney saw the panic and tears in her sister's eyes as she gave her a hug and directed her to the basement stairs."