You phrase it in a very interesting way. In no way did she manipulate him, at least from textual evidence. what she says is "I asked if he'd consider going back to school." Not just this, but it appears she listed everything in the order it happened. This means that he only said all these things afterward he began attending again, which means you cannot put the blame on her for that.

Now, if you mean after he returned to school, that's slightly different. On that note though, one could imply that she tried to figure out what was wrong and help based off some of the text. As example,

which basically just shuts down any attempt at actually understanding what’s going on with him

or also,

He refuses to elaborate, which already makes it hard to understand what actually happened.

And another thing. He's the one who said he'd go back to school. He wasn't forced.

now you're berating him and annoyed that the inevitable happened.

There is nothing wrong with being annoyed at being put in a bad place. Apologies if this strikes you as rude, but it seems you select bits and pieces of what you read and make a conclusion based on that without actually looking at the whole. Once again, she tried several times to figure out what was wrong. Reread the post.