In addition to all the above points, the LW said "...it's just that it's fairly ridiculous for her to compare what she's going through to what parents of young children go through."

...it's entirely possible this was elided from the letter, but I don't think the friend actually did this? Pretty sure it was the LW who made that comparison?

Anyways, wow, and good on the friend for standing up for herself. I hope she has people in her life that actually support/empathize with her.