Sen's VA Uncredited??

[Rachel]

I'm currently playing the PS4 version w/ English VA (really enjoying the game, btw!) and I noticed that the artbook that comes with the Day One edition doesn't credit Sen's voice actress (very clearly Cherami Leigh). I figured it was a print error or something, but then I went onto the official website and her VA isn't credited there either? Is this for story reasons later down the line, or is this just a case of her voice actress not wanting credit for the role in her résumé?

(I'm only on the start of Ch. 4, so if it is for story reasons, please mark spoilers. Thanks!)

[Katsudon96]

i noticed this as well, doesn't show on the Behind The Voices website either