Resort visited by this girl guide (6)
I believe the answer is:
sherpa
'guide' is the definition.
(Himalayan mountain guide)
'resort visited by this girl' is the wordplay.
'resort' becomes 'spa' (spa is a kind of resort).
'visited by' is an insertion indicator.
'this girl' becomes 'her' ('her' refers to a girl or woman).
'spa' going around 'her' is 'SHERPA'.
(Other definitions for sherpa that I've seen before include "Experienced climber" , "Asian language" , "Himalayan mountain guide" , "one to climb mountains maybe" , "Nepalese mountaineer" .)