My 15-year-old sister with a strong immune system took 1, 430 mg of caffiene, 121 grams of acetaminophen , and 121 grams of aspirin. will she survive?

Cannot say: She definitely has a hard road ahead of her medically. If she is being treated aggressively in an ICU or progressive care unit at a hospital that treats a lot of pediatric/adolescent patients and has GI specialist, cardiologist and intensivist, she has a reasonable chance. Might require liver transplant and/or kidney dialysis support. Pray for her.