Oh man, if it turns out you have them I would love to take you up on that -- I've been wanting to reread them for years. (I found a set at the Strand once and didn't buy it because I thought I still had copies at home which proved unfindable, and I've been regretting it ever since. The Minuteman system seems to have the second one, but none of the others.) I have no idea if they'll hold up either. Mostly what I remember is the Huntington's Chorea, the cute clever creatures that turn out to be murderers who pose their victims like lawn gnomes, and the fact that she dumps her series love interest after it turns out he's actually only a fast-aging five years old, all of which I found striking and distressing at the age of twelve. I barely remember Morgan, but what you're saying sounds vaguely correct...