As for why she's doing things when she could just stand entirely still- even without emotion, I think that one would still have a sense of boredom.
She's doing stuff because, well, there's stuff to do.
You can shout it from the roof-tops, you'll be preaching to the choir.
And you better get started on this funeral pyre, and one day I will truly set myself on fire so you can see how dim my light is.
So you can see how dim is my life