You will be amazed at how good she can hear. My GH is centrally located too and hears a whole heck of a lot better than my husband hears! lol I am 31 ft (yes, I used a tape measure) from GH. Mostly an openish concept (straight shot). There is a tv on, closer to GH than to me. I just said "Hey Google" in a normal speaking voice as if the person I was speaking to was in the office with me. 31 ft away, in the dining room, GH replied.