She takes me back to mum (4)
I believe the answer is:
emma
'she' is the definition.
(I've seen this before)
'me back to mum' is the wordplay.
'back' says the letters should be written in reverse.
'to mum' becomes 'ma' (synonyms).
'me' backwards is 'em'.
'em'+'ma'='EMMA'
'takes' acts as a link.
(Other definitions for emma that I've seen before include "companion for Nelson" , "Flaubert's heroine" , "heroine of novel" , "Jane Austen's fourth novel (1815)" , "Lady - Hamilton, Nelson-s mistress" .)