The commenter is saying that a particular person, who happens to be female, is / was an emotional wreck. How is that sexist?

It's not, unless you somehow associate being an emotional wreck with having a specific gender. Ironically saying it's sexist is probably the sexist statement here.

OP should have just said "my friend" and you wouldn't call him sexist then. Did you really react like that only because a woman was mentioned in the post? Do you realize that it makes you sexist, and not OP? Don't post sexist stuff like that here.

There's nothing sexist about it. She was a mess, I helped her deal with her problems, she greatly appreciates the help.

My point was that people's presentations have a context. She was an emotional wreck because of all the different kinds of "stress" that she was dealing with -- unresolved "birth trauma" (umbilical cord wrapped around her neck), "adverse childhood experiences", etc.

Her tonsils were extracted because her doctors didn't know what else to do. If they'd known to look deeper than the presenting symptom, she might still have her tonsils.

I responded to robbiep's comment edit above, please look for that too.

Do you're saying bad childhood experiences caused emotional trauma caused her tonsils to be inflamed?

I'm looking for a better explanation but can't find one. I don't think your comments are sexist, but they do seem illogical.

No, I'm saying that birth trauma (related to a Nuchal Cord [0], and possibly a breech birth [edit: just confirmed she was born breech; doctor tried pulling her out with forceps and the nuchal cord wrapped around her neck made her birth more traumatic than usual) was one of the factors behind her later development of inflamed tonsils. Bad childhood experiences contributed to her being unable to cope with life when we met.

  In no study was it possible by ultrasound to 
  distinguish between a loose or a tight cord, 
  although at least 3 attempted to do so.[citation 
  needed] Peregrine[2] concludes that ultrasound 
  diagnosis of nuchal cords will only be useful if 
  doctors are able to do so reliably and predict 
  which of those fetuses are likely to have a 
  problem.

[0] https://en.wikipedia.org/wiki/Nuchal_cord

> but they do seem illogical.

I typed my first comment in this thread out on my phone. Subsequent comments were done using a keyboard. I suppose when challenging conventional wisdom I should restrict myself to using an actual keyboard to develop my post more.