r/NCIS

My favorite character has always been Clayton Reeves. But now it's Agent Gary Callahan.

We know a lot about Zivas father, but little about her mother. When they talked about Ari in the early seasons I assumed it was like a one night stand just to get his secret agent kid or whatever, but when Eli comes to the states in s8 he says something like "my house used to be filled the laughter of children, you, Ari, and Tali" and something about her mother. Did Ziva and Ari have different mothers? Which one (if any) did he marry? Are they divorced now or is she dead?

Sorry if I'm overlooking something obvious, it's been a while since I watched the later seasons.