Why would she let her child do chores for money if she’s rich?

I know a local business owner, who makes probably at least $20,000 a month, and yet she says she lets her 11-year-old daughter do chores (take out the garbage, fold laundry, etc.) for $5-15. Her 20-year-old son also works part time at a jet ski rental in the summer. If I was making as much money as her a month, no way would I let my kids do chores for allowance money or have them earn their own money at a young age.
Why would she let her child do chores for money if she’s rich?
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