Ok... I'll try to explain. I also run OS X on my PC and my sister has all her stuff in OS X and that's fine, she just reboots into OS X when she needs anything and then I go to windows most of the time. The problem is when the computer is shut down from OS X wake on lan doesn't work. Wake on lan works perfectly and it's 100% reliable when my computer was shut down from windows or put to sleep from windows. So I was thinking when my sister stops using the computer, instead of having her always have to wait until the computer boots into windows and putting it to sleep I would just tell her to never shut down the computer, instead just restart it (goes to windows if you don't touch it) and then have the computer go to sleep by itself shortly so it is always available for me to use with wake on lan when I'm not home.
But I'll probably just have her switch completely to windows and take out OS X out of the equation and solve the problem like this.