She Brought Her Friend With Her

So I have been talking with this girl for the last month. She is in one of my classes, and we went to the same high school but I did not know her then. I finally got her number last week, and I asked her to come out with me. A bit of backstory, I go to a bar school where having a fake is essential, but she does not have one. So going out isn’t something she does everyday, but she agreed to come out with me to a party. BUT SHE BROUGHT HER FRIEND!! We hung out the whole time, I bought them both shots and got them beers, and overall we had a really great time. But the friend never left her side. When we got back, I made sure they made it to their rooms and she hugged me and said she had a really great time. Is she interested and only brought the friend so she could get a second opinion of me? Or is she not interested and brought the friend so nothing would happen? I have no idea what to think right now.

As a side note, she has a lot of friends that are girls and is almost always hanging out with them. I have yet to see her with a guy on campus. She has had one boyfriend in the past, but they broke up 4 months ago. Not sure if that helps..