I understand the well-meaning behind this, but my house stays around 65 F this time of year and I do not think that would be good for Kleo.
The only other option would be to use the handwarmers I have for emergency, but those would be unregulated as well so probably not much difference.
So far she's been well and healthy for 7 months under the conditions I've had her, so I believe she will continue to thrive for another day or two until I set up her new enclosure. But thank you.