My Daughter Recently Had An Episode Where She Passed Out

My daughter recently had an episode where she passed out while in a car, woke up in the ER, they told her she aspirated on vomit, her blood pressure was 190 on the top, and she had been complaining of her stomach hurting a couple of days ago. She couldn't find her discharge paperwork so I told her to call and ask for a
copy, but I am concerned about her health and what might have caused these symptoms.