Who is Louisa Conway from Wieland; and Memoirs of Carwin the Biloquist and what is their importance?

Louisa Conway becameTheodore and Catharine's ward after her mother's death. After she reconciled with her father, Louisa was left in Wieland's care during her father's temporary absemces. Wieland's murders Louisa, beating her so violently that her facial features were destroyed.