- I wish you were my sister. You're so kind and nice.
- Why? Is she unkind to you, darling?

6 seconds sound clip from the Dead of Night (1945) movie soundboard.

You can hear this line at 00:25:29.256 in the Blu-ray version of the movie.

Quote context

[...]

- No. Stay with me. It's better now you've come.

- Isn't it silly of me? I don't remember noticing you downstairs.

- Are you one of the Headingly children?

- My name is Francis, Francis Kent. It is my bedroom, mine and Constance's.

- Constance?

- She's my half-sister. She's grown up, like you.

- I didn't notice her either. All the other girls seem much younger than me.

- I wish you were my sister. You're so kind and nice.

- Why? Is she unkind to you, darling?

- She hates me. She said she'd like to kill me.

- Oh, don't. You poor little thing.

- But it'll be quite different now, now that I've met you. I'll be able to sleep.

- Poor Francis. Come along, I'll help you.

- Has anyone tried the playroom?

- Nanny insisted on locking it and she's got the key.

[...]