They are somewhat active at night and sleep pretty much all day. She basically found a place she felt secure to sleep and that's where she will stay until she wakes up and decides to come out and about. Most of mind start to get active around dusk but some don't until later--that's with no light other than some very dim light from a covered window. If you are using lighting in the room or on the cage this may vary.

Also, keep in mind that active for a crested could be coming out and perching on a leaf for to stare at you while you wait for it to do something. Then as soon as you leave the room you hear a thump and all kinds of action.

Here is a thread that has some cresteds of different ages on a ruler for size reference: http://www.ball-pythons.net/forums/s...ad.php?t=26873. From what I can tell yours looks pretty close to adult size, but a ruler pic will definitely help determine that.