How do I politely tell my girlfriend that she is being annoying?

My girlfriend of about a week has been getting a little bit annoying lately, she isn't overbearing in person but she texts me constantly. I need a little bit of space. The other problem is that every day she will tag me in at least one status on facebook for absolutly no reason. I don't have a problem with her tagging me in posts or anything like that but everyday or more than once a day is a little much. She will also talke my phone when we are together and text random people, I have the iPhone so she will look at all of my conversations and text those people. How can I het her to tone down the facebook posting and incessant texting without upsetting her?