X-men First Class: The High Hand #1
Lavecchia, Emma Frost’s boss, brings her to the Hellfire Club, so she can poke into minds of the Hellfire Club, and she also serves as an escort for him. They need to negotiate a deal, where the boss owes money to Shaw and information about Colonel Hendry. Drunk, Emma scans Shaw’s mind and is surprised to find that he is a mutant, too, since she has never encountered anyone like her before.
The deal goes sour, so Shaw and his enemies defeat the members of the club, and he tells Emma that nobody owns her. She then turns against her abusive owners and kills them, revealing her diamond form powers as well. She joins Shaw’s side and, thus, named the White Queen. Azazel mentions she will become stronger than all of them, so Shaw tells him to call his Russian friends to devise a helmet.