Thanks for all the comments. I'm definitely going to recalibrate, the colours look a lot more pink here at work.
Marvin, I'm glad you liked the looser framing. I experimented quite a lot with framing during the shoot, and I am preferring the looser approach myself.
Bindii, dreamy is exactly the right word to describe the girl in the second image. I rather though that photo captured her personality well, and I'm glad to see it did.
Here's another dreamy little darling, in a shot which needs some colour correction but shows the annoying mixed lighting I had to struggle with.
Any suggestions on how to deal effectively with white and gold fluorescent lights in a room with a low ceiling? I bounced the flash off the ceiling, white balance set to fluorescent, and hoped for the best. I had stupidly set my camera to JPEG instead of RAW, so I couldn't do anything about WB afterwards.
The first girl is one of my absolute favourites, and she quite dotes on me as if I were an older brother (she's an only child, which probably explains it).
The last girl is actually my absolute favourite, and I received a wonderful thanks from her mum when it was time for the parents to all make their speeches. My Chinese isn't great, but it was good enough to know that she thanked me at least three times in the most glowing terms, which really touched me.
Here's my favourite shot of her from the graduation day, showing her glorious 'phoenix eyes' off to perfection.
Of course it could do with a little reduction in saturation and some colour correction.