Ronan was completely immersed into the halcyon days of his life, when he proposed Amaris back then.
It was not an unconscious act that the most feared man plopped down on the wooden floor rather the witty and observant Lord was well aware of his surroundings.
A part of his brain was still holding the capability to focus around and stay alert, despite Ronan Ross was blankly staring at the picture of his late wife. The 'blank' face was itself an expression associated with him but one doesn't get lucky to witness him, at his weak state.
The villa was scented with her memories, Amaris's laughter echoed in his ears along with the feeble giggles of his dead child! One wouldn't have thought that the Lord of the underworld, the same man who was holding the economy and business in his hands, was slowly deteriorating his mental health.