Not sure if you already got a workaround for it, but I opened the cheat menu and tried Spawning Bianca. It throws back that she can't spawn, but also closes the introduction so you can move past it again.
Just went after Lash for some lazy cash with the BDS and 300+ shields, only for him to take 1 lust damage when he broke my shields. Is something broken or did he get a buff to make him take some work to bring down?