From that day on, Jacob lost the will to live. He was full of regret and hatred to himself. He wanted so much to die but his body won't just die like how he wanted it to.
Adam also went back to work. Even though he was hurt from Hana's death, he knew that she'll come back and he will soon follow her once she found the right place where she would emerge once again. He was used to this occurrence because he had witnessed it several times.
Unlike Adam, Jacob had just recovered some of his distant memories from the past lifetimes he had with Hana. And most of the memories were the parting moments. He was deeply traumatized with the things he was remembering plus, the recent loss he got form her death.
Hana's family was able to adjust already but from time to time, Alice would cry because of grief.