The Butterfly Mafia 4 by Fumiya Payne

At the unbearable sight of Asha clinging to life, an enraged Noni knows only one way to extinguish the fire burning inside her heart, and that's by bringing the heat to the heathens responsible for injuring her sister. With her future uncertain and her sanity in jeopardy, Shawna shoulders the blame of the brazen attack. Because her lifestyle doesn't let up or lend sympathy, she'll soon be brought face-to-face with fears that will force her to fold or finally stand firm.
Believing the risk of their relationship is worth the reward, Lo-Lo and Uno make a pact to protect what they consider true love. But with the odds stacked against them, their alliance will be put to the ultimate test.
As The Butterfly Mafia are on the brink of extinction, they have no idea that also lurking in the shadows is a vengeful presence with a sinister plan. In this suspenseful finale of shock and surprise, each character will be met with the meaningful message... sometimes the choices you make have irreversible effects. Will that revelation cause them to crumble? Or will a few of these cold-hearted criminals stand tall and take the bitter with the sweet?