Just to clarify TNR - the idea is to work on a feral colony; the really wild ones are released (the "R" in "TNR"). That way there is still a colony there, and a new one does not arrive to take is place.

Since there doesn't seem to be much of a colony where you are, the kitties will keep showing up.

Does your friend have any space to foster the mom AND her babies?

You gotta find people with room! Any replies you get on your ads for Fatty and Pretty Girl, see if you can find a good foster person in the bunch.

How is that woman doing who was going to foster but was going for cancer treatment? I hope she is doing ok!