I feel intimidated by my crushes friends?

This girl and I have really been hitting it off recently. We've been super flirty and I know for a fact that she likes me because I've been told, and she recently asked me out on a date. I really like her as well, because apart from the fact that I think she's really pretty, she's hilarious and has a wonderful personality and I adore spending time with her.

However, her friends actually intimidate me. She's a senior and I'm a freshman in college, so our friend group is obviously different. There is a little overlap, as she occasionally mingles with this group of girls who literally made my life a living hell the first semester (perfect, right?). I don't know why I find those students intimidating, I think it has to do with the fact that they are older, and are very "loud" people. I've heard from many that some of those individuals are very judgemental, which is another thing on my mind.

I don't want this to hinder any potential relationship, friendship or romantic, that I could have with this girl.