Does she check and improve husband? (5)
I believe the answer is:
edith
'does she' is the definition.
'Edith' can be an answer for 'she' (I've seen this before). I am unsure of the 'does' bit.
'check and improve husband?' is the wordplay.
'check' becomes 'edit' (edit can mean to check or emend).
'and' means one lot of letters go next to another.
'improve husband?' becomes 'h' (I can't justify this - if you can you should believe this answer much more).
'edit'+'h'='EDITH'
Can you help me to learn more?
(Other definitions for edith that I've seen before include "Female name" , "- - Piaf, singer" , "- Cavell, nurse executed in 1915" , "- Cavell, WW 1 heroine" , "Dame - Sitwell, English poet (Facade)" .)