I was thinking about that this morning ... there's a lot of wordplay and double-meanings in the lyrics, and I'm not sure some of it would translate. For example, I notice she signs "sick" like "I feel sick". But the line is "sitting in their own sick" so I feel like the sign for "vomit" would make more sense there.
I like when she fingerspells his whole name, the first time and then the last. I only wish my fingerspelling was that fast.
(Disclaimer: I am only adequate at ASL, and I'm out of practice.)