Would you be upset if your 19yo refused to help with this?
She has said no, because she's busy with her (4 days a week, well paying, modelling/promotional) work schedule and wants to hang out with her friends (translation: party) on the weekends. She has also said her siblings "don't listen" to her. I know they're a handful (I've been a SAHM until now!), but they do love her.
Would you expect her to help out or be upset with her if she didn't?