Uh, well, Lecter altered or destroyed most of his patients' histories prior to capture, so there's no record of anyone named Mofet.
8 seconds sound clip from the The Silence of the Lambs movie soundboard.
You can hear this line at 00:22:32 in the Blu-ray version of the movie.
Quote context
[...]
- Yeah. I'm... I'm still here, sir. I just... I don't know how to feel about this.
- You don't have to feel any way about it.
- Lecter did it to amuse himself.
- Look, I know it got ugly today, but he mentioned a name at the end - a Mofet.
- But, um, I thought the yourself reference was, uh, too hokey for Lecter.
- Unit 31 was leased for 10 years, prepaid in full.
- The contract was in the name of a Miss Hester Mofet.
- So nobody's been in here since 1980?
[...]