<human>: Can you succinctly summarize the text in 1-3 sentences?

Hello, my sister in law trapped a feral cat that was living under our small office building. The cat had four kittens, and two lived. The cat is now living in a bathroom (not used by people since she is in there) at work worth a comfy cubby hole for her and her babies to sit in. I come in on the weekends to feed her. After researching I truly believe she is feral as she shows no signs of being a stray. She will not let anyone near her or let anyone touch her, she hisses and swats and acts like humans are predators. 

Anyway, I am talking care of them while my sister in law is out of town for three weeks. The kittens are over two weeks old now and it's getting to be a crucial time for them to become used to humans so they don't end up like mama. Yesterday I tried to pet a kitten and mama swatted me with her claws and wrapped her arm around the babies and brought them in close to her. I am trying to be very very quiet and gentle around them, no sudden movements... but we've made basically no significant progress with mama yet.

Yesterday I did some research and tried giving mama food and sitting about 5 feet away. She ate the food in front of me which was progress. As I type this she is nursing them while I am 5 feet away which is also progress. If I move too much though she stops.

So I guess here is my question and the
<bot>: How can I socialize the babies without throwing away all the progress I've made with mama and running what very little trust I have earned from her?