Hi MC: I think it's a good thing to be cautious when her words make you feel more than you expect...granted detaching is essential - but who could blame you for reacting to a word like that...
A few weeks ago, just before hanging up the phone, my wife said I love you - and it left me silent and stunned...and but I also knew it was just habit and not feeling talking.
You're doing so well at staying detached...it must be good to have enough detachment to recognize those few lingering threads right away. -carlos