Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you with your wee one today.
How long has it been present?
Any discharge, pus, or odor?
Since aspirin isn't advisable for cats, can you tell me how much you gave, how often, and how much she weighs?
Can you take a photo of this leg and the wound? If you can do so, this will let me see what you are seeing. To post them online, you can use the paperclip icon on the tool bar above your text box. Or if you can't see that on your computer/phone, then you can post them on any other site (ie Flickr, Photobucket, imgur, etc) and paste the web link here for me to check