Harriet withdrew after the committee sent back her answers saying they were shocked at how bad they were. The ranking member said it was the first time ever he could remember that a nominee's responses had to be sent back because they were so bad.
I think being told you couldn't even complete the questionaire right kind of signalled to Harriet that the nomination wasn't going to work out, so she withdrew.
So you are wrong to say "nothing changed".
Yeah, but almost everyone knew she knew little about constitutional law before that.