True.
She said she had to show her how to change a diaper, not that she didn't know how.
I recall Blake quoted as saying “not very well” or “not proficiently” or words to that effect. I remember it because to think that Dunham did not know how to change a diaper at all was so counterintuitive when I first read it a long time ago that, when the interview was posted, I paid particular attention to what Blake was quoted as saying.
Now, perhaps we are talking about two different accounts of the interview or two different interviews with Blake. I’m referring to the one where after about 10 questions she hung up on the interviewer when he revealed he had doubts about Barack Obama’s parentage.