Here it goes:
Blogger Danielle Herzog related her anguish upon hearing about the “mean girls” in her daughter’s kindergarten class.
It is from Psychology Today. I am aware that relate has quite a few meanings, but cannot get which one fits there.
English Language Learners Stack Exchange is a question and answer site for speakers of other languages learning English. It only takes a minute to sign up.Sign up to join this community
As you said, "relate" has a few meanings. In this case, the meaning of "relate", according to Longman Dictionary of Contemporary English 5th edition, is:
to tell someone about events that have happened to you or to someone else
So, in this example, Blogger Danielle Herzog simple told someone about her anguish ...
According to Concise Oxford Thesaurus, synonyms of "relate", in this case, include:
tell, recount, narrate, report, recite
In this case, it can be replaced by "described". Running a google search for "she described her anguish" gets around 2000 hits, which gives us an idea of its frequency of use. In a similar search for "she related her anguish", I found only two results. This suggests to me that this particular use of "relate" is lower frequency, i.e. less commonly used in general, than in its "linking" sense.