@RyoukoKonpaku I was thinking more that because she has an understanding of these dimensional interactions, she is able to manipulate them, much like how we understand how shadows (2D) works so we can manipulate a 3D object to create a shadow that would not normally exist in its natural state...
That was pretty refreshing for a chapter, didn't expect that kind of cute side to Shinobu. Since he's able to use multiple items at once I wonder if that's his end game, just overwhelm his mum with a crap load of them.