Trouble with a very brazen snake.

[EL Ziggy]

Owl- It sounds like she's just a bit skittish which means you'll have to be extra careful when opening her tub . My bull snake will sometimes stretch for the top of her enclosure as well, especially if she's hungry. When she's full she's naturally less active. I definitely wouldn't want her to hit the floor and get hurt or lost either so I pay close attention to where she's at when I open her tank and steer her back inside with my hand if necessary. Do you handle her often? Two of my snakes were very skittish for the first couple of months after I got them. They've calmed down quite a bit since then. Best wishes with your corn.