If the party leaves the 'House of Hope' at any point before stealing the Orphic Hammer; Karlach will prematurely enable her post-outcome dialogue branch acting as if Raphael died, Hope took over his house and the party got what it came for.
*The 'How was it, being in the House of Hope?' dialogue branch should not become available until after the party killed Raphael, and its first option should only be available if Hope survived.*