Should I let a girl that is called "a low reputation person" into my group of friends?

I just entered high school and its a lot better than last year. Last year all my friends turned against me because my best friend told the popular kids things i never said so she would become popular. But now even though those things are behind me. There is this girl that the popular kids in high school say is a loser with low reputation. If i hang out with her then I would become a loser too. Now I don't know whether I should just kind of ignore her a bit but not to much or show her somehow that I don't want her around. I know this may sound like I'm a really b****y person but I really don't want to be treated the same as last year. Please can people give me some suggestions. Thank you~