I’m pretty sure she’s not his daughter, but they’re both referring to a person that is ‘on the other side’, and that person is the father of Al Sarmen that was mentioned many times before.
Mogamett sees him because he’s looking into…
I have a feeling you’re probabaly right. Though I was kinda hoping Gyokuen was Mogamett’s bastard child
“Whatever may happen, I will always be by your side. No matter how much time might pass, even if our circumstances were to change, I shall remain as your loyal servant forever.”