What Should I Do If A Teenager Drank Harpic Disinfectant, Vomited Multiple Times, And Is Now Experiencing Burning In The Esophagus And Stomach?

There is a girl of 15 years age in one of my relatives.She yesterday drank one small bowl(katori) of harpic disinfectant bathroom cleaner which comes in red bottle. After that she vomited 6 times in 3-4 hours.after that she vomited 6-7 more times. she vomited 13-14 times till now. She is not telling anyone that she did it and not let me telling to anyone for this. She feels like burning in oesophagus and in stomach.now feeling better than yesterday but i have concern please its a request to give me medications tips and what to do now?