If your shimeji does walk, sit or climb up your screen. I'm pretty sure you have installed it correctly.
The glowing animation and her typing on her computer are one of the rarest actions to appear. They don't appear that frequently and is probably due to the scripting I think.
I took my shimeji file off somebody else's file and didn't touch the script at all because I don't know how to change that.
Kanaya doesn't glow, play her laptop or multiply often on my computer too. :'C If you could somehow find a way to edit the script so those rare actions happen more frequently, please do tell me too because I'm just as stumped as you are. ;_;