I would like to know what the temperatures are. Not that they are ok or where they need to be. Do you have analog thermometer on the tank or a digital? The analog gauges fail very quickly and will mislead you. Also, if you have a digital, does it have a min/max setting so you can see how hot the enclosure gets at the hottest part of the day and how cold it gets overnight? This can also be something that is over looked if your only checking current temps infrequently.
Is the gecko still digging?
I still say girl from the new pictures.
Is the tank bare or are there plenty of good hiding places(like cork flats or tubes the gecko can get into?(Sorry I can't remember if this question has been asked yet for this thread)