Complex sentence: However, a desperate Nicky realises that "Tomorrow's too late" and runs after Mary's car, eventually attracting her attention and breathlessly asking, "Why not today?" to which she agrees, smiling.
Split into simpler sentences: However, a desperate Nicky realises that "tomorrow's too late" and runs after Mary's car. He eventually attracts her attention and breathlessly asks, "Why not today?" to which she agrees, smiling.