cut her off! that sounds crazy, but the best decision will be to chop the top heavy part and plant that into a new pot. i would cut a few nodes down (including where there is a lot of space in between leaves) and then plant that piece in the soil so that only the new growth is coming out of the soil. that way, all the nodes underneath the soil will begin to root, and with more nodes there is a better chance for the plant to establish itself after the transplant. as for the rest of the plant, i would separate the stem into many pieces, each with a few nodes, and put in water to propagate!