After living alone

"Wednesday morning at five o'clock
As the day begins
Silently closing her bedroom door
Leaving the note that she hoped would say more

She goes downstairs to the kitchen
Clutching her handkerchief
Quietly turning the backdoor key
Stepping outside, she is free

She...(we gave her most of our lives)
Is leaving (sacrified most of our lives)
Home (we gave her everything money could buy)
She's leaving home, after living alone, for so many years (bye bye)

Father snores as his wife gets into her dressing gown
Picks up the letter that's lying there
Standing alone at the top of the stairs
She breaks down and cries to her husband
"Daddy, our baby's gone.
"Why would she treat us so thoughtlessly?
How could she do this to me?"

She...(we never thought of ourselves)
Is leaving (never a thought for ourselves)
Home (we struggled hard all our lives to get by)
She's leaving home, after living alone, for so many years

Friday morning, at nine o'clock
She is far away
Waiting to keep the appointment she made
Meeting a man from the Motortrade

She (what did we do that was wrong)
Is Having (we didn't know it was wrong)
Fun (fun is the one thing that money can't buy)

Something inside, that was always denied, for so many years...
She's leaving home...bye, bye.


How should the phrase "after living alone" be interpreted in the Beatles' lyrics "She is leaving home" especially when she's leaving behind her parents who brought her up?