how very sad for that kitty. I hope that you can either take her in or make sure she has a nice indoor place to safely have her kittens. Who ever keeps her during that time should be aware of the importance of handling the youngsters so they will be tame and adoptable. If you get her to the vet and she is not pregnant than try to have her spayed as quickly as possible. I am sure there are organizations that can help you get it done less expensively if that is a concern.