ACTUALLY... he might be unreachable but if she tried calling him by his true name that could be enough to jolt the sheer Nothingness he's going with into his actual past, especially since he wouldn't have been expecting to hear that ever again, so it'd catch him plenty off guard and maybe let her see a little too much... that she could then weaponize against him to uncover more and more to force him out of it...

This could be a good way to force her to utilize that particular power and he wouldn't question it during this event at all, but after~ for a potentially good aftermath thread~