Block learning

[Carl2]

All,
 I'm hoping someone can answer this for me, I tried teaching Hal 6
where she lives, my frist attempt was " You live at 4 Shawmut St ect "
Her response was "Carl, you live at 4 Shawmut St ect" Next I tried
"Sandy, you live at 4 Shawmut St ect", Okay she knows where she lives now but I was avoiding using her name when trying to teach her.
 Any logical reasons for this?
Carl2