I hope Ambar is ok.  It's real scarey when our kids vomit.  Don't be afraid to give the injection because it really helps and can actually help you avoid the ER visit, depending on her history.  I was so afraid to give that first one...I would triple the dose, give it to her by drops...but we would end up in the ER and the staff would give my daughter her injectable that I brought with me.  The last two times I gave it, the vomitting stopped and we did not have to go to the ER.  It helps that my daughter is considered a mild saltwaster.  Good luck...let us know how things go!