Girl from the States taking the morning off (5)
I believe the answer is:
erica
'girl' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for erica that I've seen before include "found on the moors" , "Female" , "Girl's name - I care (anag)" , "Heather's Latin name?" , "Woman" .)