How to deal with a roommate that curses a lot?

I have a foreign roommate that goes with me to the same university. For some reason, she curses like a whole lot! Itís reaching the point where itís seriously starting to bother me. What should I do?! I tried requesting for a room transfer but sadly, all the other rooms are occupied. Iím tired of her attitude! My nana told me thereís nothing I can do about it, and even told me to include her in my prayers. How do I tell her that what sheís doing is really infuriating and offensive? Please give me some advice!