It would be helpful to know whether it is a truly random occurrence like they tell us. To know anything at all about it, really...

[He's desperate to think that they can understand it somehow, even if it seems to defy explanation right now.]

[He pauses, thinking of something. He wants to know. He really, strongly, does, but he also doesn't want to push for information that perhaps she's unwilling or unable to give him.]

Scully and I determined that she came here from a time after my own arrival. If I asked you about that, do you think you would have any information about her situation? I admittedly don't have much to go on...

[But maybe it's a case she knows something about. That is, he realizes, if her timeline even matches up at all.]