Dark Femme (BWWM)

A story in which A gang leader engaged to a woman from a very powerful family , confesses to loving another to get out of their marriage.
When a beautiful girl trespasses on his territory, he makes a deal with her for her life.

However, things get complicated when he has to introduce said woman to the family.

Can this young ditzy girl, prove herself capable of being the new Queen of Spades or will she crumble and fall?