who is lisa?

Lisa is a woman who had struggles throughout her childhood which we do not  know what they are. A abusive childhood is hinted throughout the show by Antony nielson and in our performance we wanted to emphasis this more by making characters join in with lines for example Dot says Janes line "I really don't know where you're getting this from Lisa" this creates a sense of mystery to the audience as to why Lisa's sister might be saying this line. I believe that it is because something happened to her and someone said this to her when she was younger. Another thing that could suggest an abusive childhood is that the goat rapes Jane, this could be Lisa's subconscious remembering the event but Lisa cant place herself in that moment as it was too traumatizing.