I definitely do agree that Estella is very beautiful, and stars are very beautiful. Ms. Havisham does reflect her cold personality over to Estella. But I imagine her more as a dwarf star. Still beautiful to the eye, but is cold and light less. Everyone does revolve around her. Estella's last name 'Satis' means efficient. "Is Manor House the name of this house, miss?' 'One of its names, boy.' 'It has more than one, then, miss?' 'One more. Its other name was Satis; which is Greek, or Latin, or Hebrew," (56). So Estella's name mean sufficient star. I think it is referring to how she only the way she is this way is because of her guardian, Ms. Havisham. Making her this corrupt star.