Only going from your description.....
If it's just a little, I'd not be concerned, if larger pieces, I'd gently restrain her and pluck them out with my fingers.
All my collection is on indented craft paper with a couple of sheets of newspaper underneath for added absorbancy. Looks good, gives them some traction and very easy for cleanup. The peices are sized to go up the sides an inch(ish) so poop or urates left on the sides of the cage.
can kinda seee it in this pic.....

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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count (05/26/2009):
36.51 BRB
29.42 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

