you want her to read incoming text messages and let you reply?
if so, and I'm not sure for "windows 10 hub" but on mobile...
open Cortana...
hit the hamburger button (3 stacked horizontal lines) at top left...
settings...
scroll down to "Read incoming text messages aloud"...
select the option you want (off, always on, Bluetooth and wired headsets, Bluetooth only, or wired headset only)