Have you checked the temps with a thermometer at all? Do you use a thermostat for the bulbs?
I'm not an expert on using bulbs for heat myself, but I'm sure you would be able to get a lower strength bulb or perhaps a coloured one that isnt quite as bright?
(Btw, a royal not eating for 2 weeks, especially when you've just got her, isnt a big deal. If she doesnt take the food, leave her till next week before trying again, so you dont freak her out)