She's sure to be let down.

4 seconds sound clip from the The Remains of the Day movie soundboard.

You can hear this line at 01:33:12 in the Blu-ray version of the movie.

Quote context

[...]

- Very well, Lizzy. If you're so sure.

- Yes, Miss Kenton. Thank you.

- Good luck.

- We did all we could for them.

- I told him... I had my eye on him as a possible under-butler in a year or so. But... No, Mr. Charlie knows best.

- She's sure to be let down.

- Well, no use crying over spilt milk. Besides, we have far more important matters to discuss.

- Next week's meeting...

- Must we discuss it tonight?

- Sorry?

- I'm tired. I've had a busy day. Don't you realize that? I'm very tired. I'm very, very tired. Don't you understand?

- I owe you an apology. I thought these quiet evening discussions were useful to our work. But now I see that they're a burden to you.

[...]