Thanks everyone
I'm going back up there in a while to make sure they are feeding etc. She is on Oldhill area.
The history with this cat is a little complicated, she has been pushed from pillar to post for a while, she originally belonged to my niece. She wasn't the best pet owner and literally dumped Bib, her kitten and another 3 kittens from another litter on my doorstep. She had alowed Bib to have 2 litters, so this is her 3rd.
I privately fostered the 5 and found homes for them. My cat is the runt of the younger group.
Unfortunately Bib and her kitten have not yet been neutered and obviously Bib has gotten outside and had a rendezvous. There is no point in placing the blame on anyone, what is done is done, and now I will help my friend. She has definitely learned the benefits of neutering this evening, and has asked me to book the older kitten in for her spay next week.
I am concerned as she hadn't suckled. How long before the kittens need to feed? Should I panic if I go back up there in ½hr and find they haven't fed? What are their chances of survival if I need to intervene? Will she move them into a warmer area if needed? I know I shouldn't move them, it's her prerogative, but we have placed some blankets around her and the kittens. I'll stick a heatpad in the blankets for her, then she can move if she choses.