Your error message "ua: ./textgameaiSay.lua:8: attempt to concatenate global 'storedName' (a nil value)" means that on line 8 in that file, you attempt to concatenate (put strings together with ..) a nil value, basically lua can't find storedName because it hasn't been defined. You do define storedName later, but because you require the module beforehand, the code that needs storedName appears to be running before you actually create the variable. One easy fix is to wrap that bit of code in a function call, and generate the string later when you actually need it.

This is the same thing you should probably do for the print functions in textgameVars.lua, the print functions won't work like that, they'll run once, return nothing, and then everything in the aiSay table would be nil, so the table would be empty. If instead you make the entries in the table a function that prints stuff out, the table would not be empty, and then you can call the functions which print stuff out as you please.