One challenge in writing a sequel to Phantom of the Opera is that the Phantom had tarnished has chances as a love interest in Part 1 by going on a killing spree. In order to restore his romantic lead status in Part 2 they had to reboot other characters, retroactively undoing the arc of Part 1. Male ingenue Raul is now a drunken gambler who mistreats Christine. Confidante Meg Giry ("who is this new tutor?") has been turned into Carlotta 2.0 as a homicidally jealous burlesque singer. It's a bit jarring.
Stranger still is the revelation that the Phantom and Christine conceived a child. We saw the extent of their few interactions in Part 1. Did it happen on the boat while they sang the title song? In the bed after she passed out? On stage in front of an audience singing Point of No Return?