OK, just unpacking this...
A £4K bed from Selfridges when she could have bought a cheaper one (even got a free one from freecycle) and saved up the difference for a deposit for a place of her own? £3K per month on a flat in North London (2018) when she could have got a cheaper alternative and again saved the money towards her future security.
Obviously she was more concerned with living a certain lifestyle rather than prioritising how she spent her money.
She has an Aesop product (they are not cheap) in her kitchen when she could have bought a cheaper one from Poundland and again saved the difference.
She has Penguin clothbound books when she could have bought paperbacks from a charity shop... and again saved for a deposit.
It's not for me to say how she should spend her money but it's very clear she made the wrong choices!