i don't think there's anything wrong with the photos...she's really pregnant now and she's proud of it...
she's comfortable and happy being pregnant and wants to show it and the beauty of it...
the issue of conservativeness comes up, but really, i think that this isn't on the same level as a typical shoot that shows the same amount of skin...this is far more innocent and pure than a typical racy/sexy shoot (of which there are plenty now, even in Thailand)...