So what u have to do is to encourage ur friend to go to the dance class
u can encourage her by telling the importance of dance
remind her abilities......just say that she is capable to dance, as she is a good dancer.
let her wont go into depression, increase her confidence.

3 5 3
You should help her by encouraging her.the more you encourage
more the impact will be.dont forget that you should also say the
importance of learning dance the capturing power of
mind increases.for learning dance music is also
 also helps brain.