We moved the family out of the wood stash and let them find another place. They literally moved on a hollow place under the steps. We have gotten closer to the cats and now she comes by herself to get treats and pats. We feed her everyday and provide milk and water. Yesterday, we got an anti-bug oil and applied it to her. She has started putting on weight and it's nice getting closer to her and seeing her doing better.
May also be a little mum - barely more than a baby herself. They can apparently get pregnant very young!