I am an experienced cat person, have 2 cats that I rescued as feral kittens and trained them to be lovely pets. This is my first at rescuing a feral cat that's about 10 months. She had kittens recently, but wouldn't leave our porch, would stay there all day and for many hours long into the night. As soon as she would hear our door open, she would come running (on the rare times she left the porch). Took her to the vet, got all appropriate tests and treatment and vet agreed behavior is odd-likely kittens didn't survive or she rejected them. I brought her in, am keeping her in a safe place, litter training, have toys for her, food and water, calm environment. Introducing her in small doses to other cats- going reasonably well (considering), she doesn't really try to get outside. Its only been a couple days but she seems depressed. She will play, but very briefly. I do plan to get her spayed, but vet wouldn't do it right away. Any thoughts or suggestions?