I worked at an internship over the summer and it was 7 girls and one guy. I was actually amazed that it wasn't 7 girls fighting over 1 guy. I don't know why it turned out that way but I think a lot of it has to do with what program youre doing. The internship I was doing was an outdoors, diry, sweaty job that involved hiking and being disgusting at the end of the day. So we werent really concerned with competing with each other cause, face it, we were all pretty gross lol. But, I dont know what program this is for, but if its something thats not so down and dirty like that I can see where the competition comes in.
And one of my favorite lines is 'no one can make you feel inferior without your permission'. You know that these girls are saying things because theyre jealous/bored whatever. I always believe that living the better life is the best revenge. So if they are miserable enough to do things like that, just brush it off. And them seeing you hold your head up high will be the best revenge on them being mean or nasty. And Ive found that it just gets easier with time. After a while I just stopped caring what people thought about me. And it got easier when I got some good friends who liked me for exactly who I am. That made me realize that as long as my good friends care about me, I dont care what some random people say/think about me. Hopefully you seeing that people here care about you will make this transition a little easier on you