On my iPhone can I receive or see texts from my daughter's iPhone?
Try and talk to her of you think she's doing bad things. Do not violate her privacy though. Think about it like when you were her age. Did you want your parents to know the things you did /say when they weren't around?
You can get phone stealth and get it installed in your phone. This will allow you to read the text messages through Bluetooth as long as the Bluetooth is enabled. For more information, go to http://www.ehow.com/how_6883598_read-text-messages-another-phone.html.
Man, let your daughter do what she wants - to an extent - but if she finds out she will never trust you again.