Hi and thanks for using Petco Pet Education Center, formerly Petcoach!
From the photo (thanks for attaching one!) it mostly looks like irritation. This could be from chewing a toy, her bowls, etc. It does not seem to be a truly pressing matter-and especially so if it does not bother her.
However-if it persists or worsens, I would try calling your local vet to see if they can take a look or prescribe you some antibiotic ointment to help clear the area of secondary bacterial infection. I hope this helps and puts you at ease!
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