What size is your tank and how much does she weigh?
Since you say she's eating perfectly fine and is healthy, I really think she should be fine. Like I said, I don't think she can become tangled in it. Someone can correct me if I am wrong, I am by no means an expert, so take what I say with a grain of salt.
I only ask the size of your tank and snake because my first BP did the whole "escape route search" until I moved it to a larger tub. The tank it had come in when I took it from its previous owners was entirely too small for it, hence the need to escape.