Lily said:

I-I have to go watch this.

Of course, it might help you be a better succubus. Yes, that's why. No other reason.

If it weren't for the previous arc establishing her boss as a nice person, I'd thought Lily is getting retrenched.

If a culture refuses to take whatever actions are needed to save itself, then no one else has the right nor obligation to interfere.

Others do, however, have the right to bring popcorn and spectate.