In Alvin's bedroom,
After warning Miles Johnson to stay away from Anya, Alvin returned to the city and got the news of Flora and Logan Hale. They weren't surprised that Anya was able to dig up and reach there.
He realized one thing that day. That night might be an unfortunate night for them but the birth of Zane completely changed her life for the better. Zane was her motivation, her strength to move forward bravely ignoring that she was just a young lady out there. The courteous Anya could become ruthless for Zane. Her life just revolved around Zane.
He already forced her into a nightmarish experience. He started doubting if he was forcing her into their relationship or she was in a relationship because he was the biological father of her son… Their son.
He wanted to let go of her and let her live the life she wanted. At the same time, he wanted to keep her close to him, right next to him. Thus he had no words for her.