The Betrayed Bestie's Revenge

Past life: protagonist tried to stop best friend Summer Shaw from eloping with Lucas Morgan. Deceived, sold to a sweatshop, she died. Reborn on elopement day, protagonist supports Summer's 'true love'. Summer and Lucas elope, their life becomes a living hell of poverty, debt, violence. Protagonist uses past memories for live-streaming e-commerce, becoming a top entrepreneur. Protagonist shines; Summer and Lucas, mired in debt, become beggars, to destruction.