Hahah I would love to have a house roaming iguana someday.
It's normal for her to ignore the rest of the world. I think it's better that way.
Pine shavings might now keep humidity up the best since it tends to dry tanks out so much.

How old is she? I think for almost all ball python sizes and ages the minimum is once a week for feeding. A picture of her next to a dollar for size reference would help the most to judge her size, what she should be eating, and how often.