My 13 year old vomited early this morning, she feels week, and has 102.5 fever now, we gave her pedialite, motrin and need advise?

Fever & vomiting: She might just be tired and weak from vomiting (one loses a lot of energy from it) and not because she is dehydrated. Continue the pedialyte small amounts (2-4 oz or more) at a time every 10-15 minutes. If the vomiting becomes more frequent and she develops diarrhea, stops urinating and becomes lethargic and weaker, bring her to the ed or her doctor.