Divine drink before noon with Ms Hayworth? (6)

I believe the answer is:
amrita
'divine drink' is the definition.
(I've seen this before)
'noon with ms hayworth?' is the wordplay.
'noon' becomes 'm'.
'with' is a charade indicator (letters next to each other).
'ms' becomes 'a' (I can't justify this - if you can you should give a lot more credence to this answer).
'hayworth?' becomes 'rita' (I've seen this in another clue).
'm' after 'a' is 'am'.
'am'+'rita'='AMRITA'
'before' is the link.
Can you help me to learn more?
(Other definitions for amrita that I've seen before include "water of life" , "divine drink" , "heavenly drink" .)
