I agree with Hazel - love is a dominant theme in all Sarah's work. You could also mention that all her plays refer at some point to suicide, and that all of them except Cleansed refer to religion.
Hello, I'm trying to come up with themes that were dealt with seperately across Sarah's plays. The ones that I can think of so far were: Mother, neurosis, violence(cruelty). Are there any others? Would appreciate help, thank you very much