One of our neighbours has a lovely little cat that quite often comes to us. She is neglected/forgotten about I think. I hadn't seen her for a little while, but yesterday she appeared and was limping. She couldn't put any weight on a front leg and it looked a bit swollen. I let her stay in for the day and put her out last night. She has appeared again this morning, still limping, and just now the leg has burst and she is licking off a bloody pus oozing from the leg! It is obviously an abscess from a fight/injury. What can I do without taking her to the vet? I don't think it's my place to do that and I can't really afford to, having 2 cats of my own!