Yeza had told Khan about her complicated relationship with her husband. Actually, Liiza had also learned most of the truth about it in the same meeting since she had spied on them.
Deni, Liiza's father, had left Yeza and her due to the former's frequent infidelity. Things were far more complicated than that, especially for an emotionally profound species like the Niqols, but that summary sort of worked.
After the reunion, Liiza had told Khan that she had resumed having contact with her father. After all, Deni was her sole living parent, so it was the proper thing to do.
However, the Niqols had been extremely busy after the sunlight, and Liiza had even worked far harder than most during that period. Her relationship with Deni was better but not exceptional, and his name had rarely come up in her conversations with Khan.