The main problem is that no one actually thinks in this sort of language, so it's hard to connect with the character.
Haste forced my head down?
Ignorant to the disadvantages of speed?
Dishonest cocoon?
I've taken the most recent text and thrown together a rough rewrite that does more showing and achieves the things you say you want to achieve in your post (introduce character, introduce setting, show her loneliness).
It's far from perfect, and there could be more setting/atmos, and I've embellished a bit to give her background/character, but it's just to show (ha) the kind of thing that some previous posters are trying to explain (possible TWs BTW), and how it can be achieved with very simple language:
.
I was six years old when my best friend stopped waking up.
She’d been sick for months. Too tired to play. Too tired to even see me.
Until one day, she fell asleep and never woke back up.
At least that was what they told me at the time.
I still think about her several times a week on the journey to work. It’s hard not to think about your dead childhood friend when you're paid to spend your life in NICU.
My mother went two years after that. The AA meetings—which eight-year-old me assumed was some sort of car club—gave her plenty of platitudes with which to lecture me, but did nothing to actually save her life.
Be grateful for the things you have.
Right now that consists mostly of sleep deprivation and no social life.
Thanks Mum (sponsored by AA).
London rushes by outside and I rest my head against the bus window. But it’s only a brief respite, and within moments I’m standing up along with a dozen other passengers as we arrive at my stop.
I will not be late today.