No this entire deal appears to be more about gathering information, largely what FTR knows about the past, and what they are capable of, the second part is why she had Kate kidnapped and rather than using other means of information gathering,
Kate probably knows more about Phill (this incarnation of the null) than any one else, except maybe Shidin (since they were freinds since before the start of the comic), but Phil and Shidin were out of contact for a while before getitng bac together I think and well she has been with Phil since the start. The only one who knew what he was all this time was the current demon kind/pet penguin, but he didn’t say anything back then. So she is very familiar with the man today.
Trying to break his marriage now ? Good luck..