She's of some help to a space visitant (5)
I believe the answer is:
ethel
'she's' is the definition.
(I've seen this before)
'some help to a space visitant' is the wordplay.
'some' indicates the central letters.
'to a' means one lot of letters go next to another (I've seen this in other clues).
'space visitant' becomes 'eth' (I am not sure about this - if you are sure you should believe this answer much more).
The centre of 'help' is 'el'.
'el' put after 'eth' is 'ETHEL'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for ethel that I've seen before include "Trying not to be seen" , "- Barrymore, actress" , "chapel" , "- Merman, US actress" , "- Merman, US musical comedy star" .)