i think it would aggravate the pain by touching her at that area. Wow!! i would just leave it alone to heal.
My foster kitty, Sea, just got spayed. That area is not a pretty sight for right now, of course, but i would just let it heal.
After two weeks, you can use a human nose scissors (rounds ends) - i bought this as kitty scissors
to very slowly, gently and EXTREMELy carefully to trim off the stitches.
i think it is a good idea to distract her from bothering that area even. That is what i am doing if i catch Sea bothering that area. i would play with her, or just encourage her to play with her toys, etc.
Take care, and Smiles!