That could be incredibly helpful in a pinch. And like I said on Plurk, if Valdis loses control of the Void, which is possible even though she is immune to Dust because reasons, he might be able to target the Void specifically and help her recall it! That would be a huge relief to her because then she would have a fail safe in the future if the barrier around her soul gives out again and if Bakura can't help her with ka.