Queen of Faces by Petra Lord

To survive a terminal illness, a teen steals an immortal body and teams up with rogue mercenaries to stop a dark witch from destroying their world. 

This book contains: activism, alcohol, alternate gender/sexual ideologies, animal cruelty (themes/supernatural), animal testing, blackmail, body horror, body shaming, bullying, child abuse, controversial gender, political commentary, dark content, death/grief, deception, depression, derogatory terms, divination, drugs, dubious consent (themes), gender dysphoria (themes), gore, inflammatory, cultural, historical, racial and social commentary, murder, profanity, sexual activities (not explicit), smoking, stalking, suicide, theft, torture, toxic relationships, and violence.