it was the aftermath of the fight against the exterminator angels and Charlie was being all depressed due to how they lost Sir Pentious and Alastor (who isn’t actually dead but no one knows that-)

Charlie: all this bloodshed could’ve been avoided if I could convinced Heaven to work together.. I could’ve done better instead of letting you down..

she said as she turned away from the debris of the Hotal and to Vaggie, Lucifer, Angel Dust, Niffty and Husk