3 sentences

1. 不，我不是她的小妹妹。

   bù, wǒ bù shì tā de xiǎo mèi​mei.

   No, I'm not her little sister.

   Source: OpenSubtitles

2. 那个漂亮的小妹妹是谁？

   nà gè piào​liang de xiǎo mèi​mei shì shéi?

   Who is that pretty little girl?

   Source: Dong Chinese Dictionary

3. 小妹妹躲在房间里呜呜地哭。

   xiǎo mèi​mei duǒ zài fáng​jiān lǐ wū​wū de kū.

   The little sister hid in the room and sobbed.

   Source: Dong Chinese Dictionary