Hi,

I have a kitten well she is 9 months old and is also part siamese. Be glad she is quiet now because when she gets older she will meow LOTS. Especially wanting to go outside. My little Yum Yum is sneaky too, and she loves ATTENTION. I haven't heard of the joint problems they have though. When I take Yum Yum to the vet the doctor says she is fine and healthy. She weighs SEVEN lbs already. She is going to be a HUGE cat!!
I tried to pull up the photo you have of her but it didn't work.

Here is a photo of my little yum yum though

http://pepeirce.tripod.com/thekittycorner