She starts and finishes Monday (3)
I believe the answer is:
may
'she' is the definition.
(I know that May is a female given name)
'starts and finishes monday' is the wordplay.
I cannot quite understand how this works, but
'monday' could be 'm' and 'm' is present in the answer.
The remaining letters 'ay' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for may that I've seen before include "Month; hawthorn" , "The Darling Buds of - (H. E. Bates)" , "Could" , "UK PM" , "plant that's tropical making comeback" .)