I read on a care sheet that if a T sits in its water bowl its trying to get extra humidity. It may be right, it may not but I thought I would throw that theory in there.
Also, dont worry about her not feeding - mine hasnt fed since Feb 2011 but I wont start to worry until 2013 as I know they have been recorded for not feeding for up to 2 years. Its just something rosea/porteri do (or don't as the case may be).
G. rosea/porteri are 1 of the slowest growing T's known, what you have there is a sub adult but as for age its impossible to tell. T's grow at different rates depending on temp, food amount offered, what food is offered & even sex of T. Females tend grow slower & live much longer than males probably to prevent siblings mating.
Do your own research & forget what the shop keeper said. He will try to sell you his whole stock (especially during a recession like this 1). Look at it this way, if the shop keeper is a T expert, why would he be flogging himself in a shop instead of making ground-breaking discoveries about T's? It might not even be a female, you have a 50% chance its male - you won't know for sure until it moults & sex it that way (Garlic Pickle has a good sexing guide in the FAQ stickies at the top of this section).
There are a few good experts on here so take their advice, read the care sheets & sift the wheat from the chaff. T's havn't been studied as much as other animals for as long as other animals have so there isn't as much known for certain about them. Almost every month a new species is discovered or known species re-classified so you have stepped onto a steep learning curve.
Just enjoy your new pet - you have years to learn about the 'grammy' way. It may be worth getting another T like a GBB or L. parahybana to save wasting uneaten food, the 2 I've suggested are always hungry......
