Guys, Should I let my 16 year old work?

I have a 16 year old daughter who wants to work. She is still in high school and want to work after school and on weekends to have money to buy stuff and to do things with. I do not want her to work to be honest. What makes it so bad is that my 16 year old want to work the same job as my 19 year old, which is a grocery store. I do not like this idea. There's other places my 16 year old can get a job at. I do not want my two teenage girls working for the same employer. My 19 year old got a job at 16 and all her money went to her school. Her high school were all the time selling stuff and she was all the time spending money on joining clubs and organizations at her school. She paid $500 to go on a Senior trip to another state. People thought my daughter was giving me money but all her money went to her school. I am at my wits end!

Guys, Should I let my 16 year old work?
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