There's another way the line "I have pulled myself clear" can be read. She mentions that some of the horses in her dreams are "pulling", in the sense of being yoked and dragging something along (being burdened, in other words). In the same sense that one can drink themselves stupid, or yell themselves hoarse, she has pulled herself clear. In other words, she has pulled around her burden so long that she has achieved a new sense of clarity.
There's another way the line "I have pulled myself clear" can be read. She mentions that some of the horses in her dreams are "pulling", in the sense of being yoked and dragging something along (being burdened, in other words). In the same sense that one can drink themselves stupid, or yell themselves hoarse, she has pulled herself clear. In other words, she has pulled around her burden so long that she has achieved a new sense of clarity.