mu'meyDaj bIH Dochmeyvetlh'e'
= Those things are her words = That's what she said...?
I know it's silly, and I'm still only halfway through the course, but is there a more accurate analogue, or is this really one of the better ways to say this?
Asking for a friend.
We have an example of something like this being done in Star Trek VI. Some Klingon says yadda, yadda, yadda, and Azetbur responds, 'e' neHbe' vavoy, where the caption reads That's not what my father wanted. Now, it's a loose translation, since vavoy means daddy instead of my father (guess why the -oy suffix is listed in the addendum to the dictionary!). And it violates the rule that you can't use 'e' with neH. But it lets Azetbur use the pronoun 'e' to refer back to what someone else just said.
We might imagine one can do the same thing here: 'e' jatlhpu' ghaH He/she said that.
Now, I can't guarantee that this is grammatical — according to all the rules, it's not grammatical — but you'll certainly be understood.
Now, if you're just trying to translate the innuendo quip That's what she said, you're going to run into trouble because the Klingon doesn't indicate the gender of the reported speaker, and that's usually key to the joke. You might have to specify who said it, along the lines of:
mu'meyvetlh jatlhpu' parmaqqaylI' Your lover said those words