I'm glad you are finding help and support here, that is one of the reasons why this forum exists! You are right though, four days is not long enough to decide anything. Hopefully each day will get a little better. Deborah gave you some great advise about wearing her out before bedtime, hopefully this will help to get her to sleep during the night. Right now getting her spayed should be your first priority, hopefully you will be able to manage it in the near future.