I agree, keep her by herself and cut down air flow if possible.

Also consider adding something like long stem sphagnum moss in the other parts of the cage to hold up humidity.

Privacy is important so if this is an aquarium in addition to covering as much of the top as you can without being a fire hazard for any heat lamps you may have, consider also papering over the outside of the sides. Get/place a remote probe thermometer near her but outside her coils to see if the background temp is in the upper 80's consistently.

Here is a link with my very limited experience on maternal incubation.
A Maternal Incubation

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