Crossword inventor confused Anne and Ruth about abbreviation for railway (6,5)

'crossword inventor confused anne' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'and ruth about abbreviation for railway' is the wordplay.
I cannot quite see how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is found within the answer.
an anagram of 'ruth' is 'rthu' which is within the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found within the answer.
'railway' could be 'r' (eg in Great Western Railway) and 'r' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?