Re: Need advice - feral cat had kittens on my patio!
Hi, and welcome. I think you should probably start a new thread with this. Maybe a Mod can move it and give it its' own thread.
Anyhow, it sounds like the sweet girl was really lucky finding you. I think a vet visit would be in order. There is a possibility she is chipped and her owner could be found that way? ...and if not, I wonder if she has intestinal parasites and would need to be de-wormed by the vet. The products they have are much more effective than any you can buy over the counter. When I've fostered kittens/cats, if they came from outside they usually had worms and their poo was super-stinky until after they were de-wormed and had adjusted to their new diet of good quality cat foods.
Also, the vet can determine if she has been spayed. There is a chance the crying is because she is "in season" and spaying will eliminate that hormonal frustration.
Best of luck,