what would you do if...

Mary • My beliefs and opinions are constantly evolving
Now this isn't meant to shame anyone such as young girls who are active, but I'm curious to see what answers I'll get from here...
This question is for anyone who wants to answer!
So what would you do if your daughter was having sex with multiple people a lot? 
Would her age depend on how you would react to the situation? Like if she was 12 or 16?