Conversation so far:
How did Kitty Pryde get her superpowers?
Kitty Pryde started to have headaches at age thirteen, signaling the emergence of her mutant powers.
Where was Kitty Prydge born?
Katherine Anne Kitty Pryde was born in Deerfield, Illinois.
How did Kitty Prydge meet the X-men?
Kitty Pryde was approached by both the X-Men's Charles Xavier and the Hellfire Club's White Queen, Emma Frost, both of whom hoped to recruit her for their respective causes.

Question: What did Charles Xavier tell her about the X-men?
Self-contained rewrite: What did Charles Xavier tell Kitty Prydge about the X-men?