See a doctor!
Travelling by plane increases risk for blood clots, usually in the legs.
However, it's possible your daughter developed one in her arm
. Second, if the painful arm is the same arm where she had a blood draw
, she could have an infection
. Third, what happened during Spring Break? You may never know, but experiments (injection drugs) and accidents
(falls) occur. You care, so get her in ASAP!