It seems like her daughter is cheating on her... When her son-in-law, who lives with her, consulted her, Aika felt that she was responsible. Her infidelity caused her divorce and made her daughter feel lonely. She had passed on her infidelity to her daughter. If she was the indirect cause of her son-in-law's suffering, then she had to at least make amends... She would deal with the situation in her daughter's place. That was the least she could do to make amends.