Ummmmm?????? first off .......one snake one cage! You need to seperate your snakes immediately!!!!
You do not have to worry about your snake...sounds like she is doing what she is suppose to....when your snake is in blue they are even more likely to stay in their hide and not come out until they shed.
If you are using a UTH whay are you using an overhead light? What are your temps?
you may want to familiarize yourself with the caresheet section of this forum....there is a lot of useful information on this site if you are just willing to look for it and ask questions.
Please seperate your snakes ASAP