That's a big tank for a snake that size. She's probably just scared of you and sounds like she needs more humidity. X2 on lots of crumpled up newspaper. I'd add some damp moss. If you have a screen lid, cover half of it. Do you have a heat lamp or uth? Do you have a thermostat? What else is in the enclosure? A full description of your set up will help us determine the best advice.