Hello & welcome, I am Dr. B, a licensed veterinarian. I do apologize that your question was not answered before now, but different experts do come online at different times. Anyway, I have just come online, read about your situation and wanted to help.
If you would like assistance can you tell me:
How long has she had these signs?
Where are the hot spots? Just on the paw?
Is it just one paw that is swollen? Does it appear to be so on the underside?
Any odor, discharge, pus, or does it appear moist?
Can you take a photo of this paw and her hot spots? If you can do so and post them online, this will let me see what you are seeing. To post them, you can either use the wee paper clip on the tool bar above your text box. Or if you cannot see that on your computer/phone, then you can post them on an alternative site (ie Flickr, Photobucket, imgur, etc) and paste the web link here for me to check.