what makes you think they "can't"?
If her parents think she needs two paid employees to get her through uni, I’d say there’s a significant chance she can’t, don’t you?
I’ve no problem with grown adults who choose to use the money they earn to outsource some chores.
But I have zero respect for someone who has clearly never lifted a finger and can’t be relied upon to feed herself three times a day.
Imagine if you got wind of that when interviewing her for a job? She’d be shown the door so fast.