It's amazing when you remember those black things are like face huggers, one clean hit and they're done for without water. But they still charged in. Few are that confident, even in their video games, lol.
They said earlier that Emilyko and Kate are a weird pair since face's name are like or part of their shadow name. Kate made sure she wanted a friend not a doll and named it (Emilyko) differently.
No one said anything about Ram and Shirley. and even though some prononciation maybe different between English and Japanese I see no semblance between both names.
but we still don't have enough info. Like how can a shadow chose his face? what if he want to change it? what if the doll is defective and needs to be changed ? and most of all, what will happen if they fail??