He knew that what happened at ROYAL had deeply hurt her, and it was impossible for her to just forget it in the short term.
His room was directly above hers, and several times he had heard her crying, as clear as if it were right beside him. He would go downstairs, intending to knock on her door and take her upstairs to sleep with him, but he would hesitate for a long time and eventually give up.
She was averse to his proximity, let alone cuddling with him in the same bed.
For someone with light sleep, once awakened, it's hard to fall back asleep. After returning to his room, Capone would often sit up smoking, spending the entire night this way.
He noticed that Sophia Diaz didn't look well during the day; the deep dark circles under her eyes suggested she was likely awake and unable to sleep at night. However, she usually stayed hidden in her room and did not come outside, making tonight's activity unusual.