Is this a dangerous dose of stimulants?

70 mg vyvanse (lisdexamfetamine) (an adhd medication a condition the subject does not have), 34 mg of b vitamins (niacin, b6, b12), and 3 cups of coffee all within a 24 hour period. the subject (female) ingesting this is 19 years of age, with a BMI of 18.2 what are the dangers of this? could this person be in any immediate danger?