First off, go flog your friend with a wet totoro 
for doing that to her cels ;)

But now seriously, if a cel is cut, is it really 
"worthless"? I see a lot of american animation 
cels for sale out there which have been trimmed 
and still cost a pretty penny. How much value is 
in that surrounding edge or bare plastic anyways? 
In theory.. the only valuable bit is the painted 
cel, right? That's the artwork.. that's the 
important bit.. but I too would spaz if a cel of 
mine was snipped to bits. 

I'd love to hear any of your thoughts & comments 
on this. ^^

-Heather