If someone can help PLEASE give me the solution

There's this girl in my french class I really like but idk if she likes me much. I talked 2 her once, I told her she had a cool shirt. (Rick and morty shirt she wears ALL the time.) Then I never got the guts to speak to her ever again... She's sorta emo and she leaves class like, the second the bell rings. One of my friend is kinda friends with her but idk if that helps. 

Like really if someone knows how I can befriend her PLEASSSSSSSSEEEEEEE tell me.