There is a small, hard lump on one side of Muffin's face, just above her mouth:

Any ideas about what this could be?

She also has a spot that she's been digging at on her tummy:

How should I treat this?

I know also that she has a cold (kennel cough?) she's been sneezing and her eyes are runny. The vet wouldn't believe that she was sick because she doesn't have a fever

Thanks for the input!