The green Lilith has a bug with her passive - it's supposed to give immunity to sleep and lower MAX XP effects for the entire team, however she only protects herself from lower MAX XP, the other allies are affected.
I don't know if that's the case with sleep as well, haven't come across a team using it yet, but the lower max hp protection is certainly bugged. Tested in the arena. It's especially painful since I've spent 700 frontier coins on her. Please fix it ASAP.