Good news! One of my local vets has taken the kitten for the moment to give her a check up and she will be given over to Cats Aid, hopefully some time today. She's in good spirits and over the night I managed to get her to eat and drink. This morning she was a bundle of energy! The vet has my number to pass on to the rescue to tell me when she has been rehomed or if she can't find a home my parents said they'd be willing to take her, they have 2 (very spoiled) cats of their own anyway :-)