if it is a wild polecat once you have it back to full health let it go back into the wild were it belongs but my guess is it somebodys ferret thats been left behind and its been running wild for a bit and has turned semi feral just give it time and she should come round
full whippet mate, theres more pics of her in the lurcher section, shes not long broke her leg but on the mend now.
good to hear shes on the med nice wee dog