As an actual former NEET, reading through the comments, I have to set one thing straight: a lot of people are talking out of their asses here. This manga is scary realistic.
I dare to make this bold statement because I'm 100% Neeko.
Fresh out of school, I had a similar experience as her and as a result ended up as a NEET for almost 5 years, believing I was an unemployable, useless human trash and a burden on everyone around me. (And I mean spending entire months without leaving the house.)
Then one day I managed to land a job through my mother's connections and just like Neeko, the first day(s), all I wanted to do is hide in a corner or go home. (In fact, I had a favorite spot to curl up in and fight the nerves.) But I stayed, out of crushing guilt, and fear of getting kicked out of home. It was hard work and I did dream of work for weeks (which is actually quite normal when you're dropped into a new environment, and in no way a sign of PTSD, like someone stated here).
Turns out I'm also a fast learner and there are things I'm really good at.
Fast forward 6 years, after working my way up, today I'm making bank by leading an entire division, negotiating with clients, and getting sent to trade shows abroad. Not exactly the job that comes to mind when you think of NEETs.
Why am I telling all this? To show that this can happen. People here talk like Neeko is supposed to have a mental breakdown and PTSD every time she's confronted with any amount of pressure. That is simply not how this works. NEETs do in fact have coping mechanisms, they're just weaker than normal, but can be strengthened with repeated and gradual increase in exposure.
This is where Neeko's mother took a great gamble. She estimated this job to be below Neeko's threshold, and she was right. Regardless of outcome, she still betrayed Neeko's trust, but at the same time she didn't do as horrible of a thing as people make it out to be. In the end both parents agreed there are other methods and this was not the right thing to do.
Wish I could say the same thing about my parents...