1. A big reason I like this part of the painting is simply because I like the shade and tone of that red she uses. Sometimes we overthink paintings. It's good to just take pleasure in the pure sensual or aesthetic qualities of a piece.
2. By looking at a detail we can see how Lipton treats a canvas as a palimpsest, with the traces, the echoes of earlier markings evident in the final piece.
3. This would make a fine painting in and of itself, wouldn't it? Sometimes painters will do a large, quick abstract, and then select a portion to develop into a coherent piece. Sometimes musical composers just keep a recorder running while they improvise and fool around with licks and melodies. Sometimes something will emerge that's worthy of further development.
4. The upper left quarter of the painting, the area from which this was taken, is much more spare than the rest of the canvas. A good reason for not treating this as its own piece, is because by including it in the larger composition it provides an interesting contrast, strengthening both it and the work as a whole.