Reply to Phone Trouble! Help!

I recently got my daughter a smart phone because she would also tell me about her friends having phones and she was the only one without one so once she got it she wanted an Instagram well I got it but our rule is I manage it she can look at Instagram but it’s on my phone not hers so I can see who she talks to and I also have her Instagram as private and it has worked she doesn’t complain if she does no Instagram!