dieing

Any idea as to why my oldest shimpaku isn't doing as well as my other Shimpakus? I water it maybe 1 to 2 times a week minus rain fall. There are 2 other shimpakusaround it that are deep green and healthy. Im slightly inexperienced with evergreens and can't figure out why.

I bought a bonsai for my mom. Lately she has moved its location around I think she may have over watered it once. It is wilting a lot and the leaves are losing their deeper green colouration. Its been with her for about 4 months, but only in the last couple of weeks, has it deteriorated. She...