Veterinary questions? Ask a Vet for Answers ASAP
You are through to Dr Coles. I am a UK based vet. I am sorry to hear you are having problems with your cat. The paw looks very burnt and sore. I can see where the skin is burnt and starting to peel. It is good that she is walking on it normally, but burns can take a while to start to show fully. Burns often also get infected and they are very painful. I would not advise that you put anything on the paw at the moment as some ointments and things which are designed for people are not suitable for burns. I would not let her go outside at the moment because she is likely to get dirt/debris on the burns. You need to contact your vet ASAP by phone to have her seen as this will be very sore and she needs pain relief & possibly antibiotics. Please call them directly to arrange an appointment.
If you are eligible for any benefits then the PDSA may be able to help you (please contact your local branch via phone). Some vets can offer payment plans via carefree credit. If you are very stuck you can contact the RSPCA/SSPCA and advise them that you cannot afford treatment but that she is hurt. From looking at the photos (obviously not able to assess fully) I do not believe she will require any surgery, however she will need some medications so this could be in the region of around £100 or so depending on what she may require. You could phone your vets and discuss with them first.