The confusing matter of when we are deemed to have grown up

A few days after the admissions process, I saw an unexpected email from my daughter’s college administration. On clicking it open, I was relieved to see that it was only an automated message informing me that she had 100% attendance that day. I don’t think my adult daughter’s attendance is my business. But I still get a daily email, and at the end of every term, even her marks sheet is addressed to me.