Quirrel query

[quigonginger]

No: HPFGUIDX 129617

This has just been itching in my  mind.  I have been digging in the 
archives (somewhere in the 49600's) and they had a huge thread on 
Quirrel and the Halloween troll incident.  It occured to me (but not 
to the listees involved at the time, unfortunately) that DD should 
have been suspicious of Quirrel at that point.

Why?  DD set up the protections around the Stone.  Quirrel had used a 
troll as one of the protections.  (Did they feed the poor thing?  And 
who got *that* pleasant task?  And why didn't Hermione freak out 
over "False Imprisionment"?)  

<shakes head to get back to the point> Hagrid knew who else was 
protecting the Stone, but not necessarily how they protected it.  DD 
certainly knew what each had done to protect the Stone.

Why didn't DD wonder that Quirrel, who had gotten a troll *into the 
obsticle course*, later fainted at the prospect of the presence of a 
troll in the dungeons?  

Any takers?  Has this been discussed and I missed it?  CV? 

Ginger, listening to Meatloaf.