If would take her to the vet, she may have a abscess, infection, reaction to a bug bite, etc, and needs to be properly diagnosed and treated.
My Shih Tzu Has A Red And Swollen Foot And A Rash What Should I Give Her To Help?
Yes take her to the vet, dogs that have furry feet have a higher risk of getting grass seeds stuck in the paw thats probably whats wrong with her.