one of my friends had 2 strokes (before he was 35!) and i remember him saynig you have a 1/3 chance of dying, a 1/3 chance of being a vegtable and a 1/3 chance of full recovery ... he had a pretty much full recovery except sometimes hes a bit slow (ie he cant tell the difference between quarters and nickles when fishing through his pocket for change)
id imagine stable condition means shes past the dying part of they are checking to see if she has any perm damage ... hopefully shes talking and whatnot so its all good for her