My friend won't let me have other friends?

I have this friend let's call her Anne and we've been best friends since Kindergarten and we just started high school and I have this group of friends mostly girls that I like to hang out with that all went to my elementary/middle except for this one guy. At elementary school I would hang out with them but Anne would always interrupt me and on my grad trip to Niagara Falls we were taking a break and I was talking to 2 of my other friends and she walked right in front of me and the 2 girls I were talking to stood up for me. I have a feeling my other friends don't really like Anne and to be honest I don't really like her either and she's done stuff like that before but it hasn't really been much more than that. Until today, my bus was late and I was waiting outside with my other friends because most of them go on my bus and they asked me if I was going to the barbecue at my elementary school, and I said probably I thought "Yes! I can finally hang out with them alone", and I went to the barbecue with my friends and was having a great time with them. Then Anne showed up and I was pissed but I hid it because Anne's still my friend and asked her how she found out about the barbecue and she she said she called my house and my dad said I was out and she asked him where I was and he said I was out and she asked where and he said "at her old school for the barbecue" so she came to the school for me and I jokingly said " That's a little creepy" and didn't seem upset by it. Truth is I was pissed and I still am. What should I do?