percy and penelope's role in all this

[waters_law]

No: HPFGUIDX 56080

I'm still trying to decide -- is Percy all he appears?  Can we trust 
him, or is his ambition steering him toward the DE's?  I think he is 
like all the Weasleys good at heart, but I think it would be easy for 
someone as pompous as Percy to be used by LV.  And this brings me to 
the issue of Penelope Clearwater.  Why was she with Hermione when 
they were petrified in CoS?  Harry and Ron believed her to be coming 
from the Slytherin common room when they were polyjuiced 
into "Crabbe" and "Goyle".  Is she involved with Slytherin and 
particularly, is she manipulating Percy?  Remember, Harry and Ron 
also found Percy wandering in the area of Slytherin's commons.  Were 
Percy and Penelope just looking for a good quiet place to get cozy 
together or is something up?

"Waters Law"