Girl was inclined to accept time alone (10)
I believe the answer is:
unattended
'alone' is the definition.
(similar in meaning)
'girl was inclined to accept time' is the wordplay.
I cannot really see how this works, but
'girl' could be 'nat' and 'nat' is found in the answer.
'inclined' could be 'tended' ('tend' can be a synonym of 'incline') and 'tended' is present in the answer.
A single letter 'u' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for unattended that I've seen before include "Not looked after" , "not taking train" .)