(It's canon,all canon.)

Soo,Charlie has a little of a not so good relationship with her father and mother.

Her parents always argued in the past,so she developed a fear of upsetting someone or not being good enough.Right now,in the Hazbin hotel,Charlie is trying to come to terms with a costumer that's not exactly polite.

Vaggie and Angel Dust are staying off to the side,minding their own business,tho..they were a bit worried for Charlie.

Meanwhile Alastor is watching it all from another source.

(You're Charlie.)