Also, back in her nose... (6)
I believe the answer is:
hooter
'nose' is the definition.
(hooter can informally mean someone's nose)
'also back in her' is the wordplay.
'also' becomes 'too' (synonyms).
'back' says the letters should be written backwards.
'in' is an insertion indicator.
'too' in reverse letter order is 'oot'.
'oot' inserted inside 'her' is 'HOOTER'.
(Other definitions for hooter that I've seen before include "One scents" , "owl?" , "alarm" , "Siren, horn; nose" , "Factory siren" .)