Back then, Mathew was the dean of the School of Criminal Investigation in Oceanfront First Police University, and also the senior of Hester. He knew the situation of Hester's family, and of course, he had seen Hannah before.
Mathew had spent his entire life in the police station. He was unmarried and had no children. Back then, Hannah was not that seriously ill. She had met him when she was still conscious.
As for the love at first sight... He didn't believe it, but there was an exception when he met Hannah...
In short, he treated Hester like his own child. He was also very concerned about Hannah's health condition. Originally, he had wanted to send Hannah to the hospital for treatment. Unfortunately, Hester was unwilling to let him help, so Hannah was delayed.