"She's still saying she's pregnant after 9 months. She faked the ultrasound pretty well, but I know I'll catch her when she goes to 'give birth'! That will prove she didn't really marry and have sex with me!"
I spent a lot of the chapter confused since I've never heard someone translate the terms as "grateful" and "genuine" before. The terms aren't very accurate to the meaning, in my opinion.
Edit: I did not see the notes, my bad. I still disagree with the terms used to translate though.