It's not really advisable that you have two different hides, snakes can end up favoring them and choosing security over proper thermoregulation. She is also likely to feel insecure because there are two entrances. No matter if they are facing away from you, she will still feel like she is more exposed because there are more entrances. I think that the best way to go is to buy her two of the same cave hides (single entrance) and put them in each end. That way, she should like both of them and feel secure enough in them. After that, if you really wanted to, you could put the log hide in the middle as well as the plastic tree hide.