Hi. I suffer from migraines and headaches
also. To be honest you say your daughter vomits, that's actually nausea
and nausea plays a part with migraine and headache. Too much heat can trigger so i recommend you turn the heat down. Also watch what she's eating as their are certain foods etc that trigger such as cheese, chocolate, swet snacks, citrus fruits. Lack of sleep, delayed or missing meals, travel, fluid retenion. If she gets this on and off very frequetly and lasts for 24-72 hours this is a migraine and it's time to see the doctor.