Brutal Rival by Ember Holt — book slip

Scarlett Bloodletter narrowly escaped her own assassination at the tender age of fourteen. Her mother, the queen, tried to kill her, possibly because Scarlett was a nomaj, without a drop of magic in her blood.

Now, as a feared criminal in the kingdom's poverty-stricken Underbelly, Scarlett is driven by a desire to kill the queen and liberate her sisters.

But her plans are complicated by Zane, the Spider Lord, a fearsome gang leader who fiercely protects Scarlett. After a passionate night reveals Scarlett's secret, Zane is drawn into her cause, and together they plot to overthrow the queen.

For fans of Rebecca Yarros, Carissa Broadbent, and Sarah J Maas.