Why is my cat attacking me?

Your cat is a victim to re-directed aggression. When she sees another cat outside the window, she gets angry because she feels threatened. Once they are threatened they attack the nearest animal, whether it be human or another cat, etc. Re-directed aggression will sometimes become habitual. Your cat develops a very territorial attitude. This has already started to happen with your cat. What you need to do is develop trust. Give her confidence. Leave her alone in a room with her litter box and what ever she sleeps in. Then at feeding time place food in a bowl in front of her. Remain there. If she attacks, immediately recoil. If she doesn't slowly back from the room. Repeat this for 2 weeks. After it gets to know your presence, try to pet her but repeat the previous for 2 weeks. Once your absolutely sure you have her confidence. Put food in your hand and go near her. If she attacks, this can get dangerous. So, where a safety glove. These can be bought at a pet store. Do this for 2 weeks. If your cat sees another cat, it will still become angry, just be sure to back away. But, this process of trust will not allow the cat to become completely territorial and violent toward you like the last two incidents. I also recommend going to the vet to see if there is something we can do to end your cat's re-directed aggression. Also remember, the best thing to do is relax. Cats, dogs, and horses can sense fear. Once they sense fear, they will panic.