3 sentences

1. 疾病使她冷漠，不愿见人。

   jí​bìng shǐ tā lěng​mò, bù​yuàn jiàn rén.

   The illness made her apathetic and unwilling to meet people.

   Source: UM-Corpus: News

2. 你对待身边的人太冷漠了。

   nǐ duì​dài shēn​biān de rén tài lěng​mò le.

   You are too indifferent to those around you.

   Source: Tatoeba

3. 你谁都喜欢，也就是说，你对谁都冷漠。

   nǐ shéi dōu xǐ​huan, yě​jiù​shì​shuō, nǐ duì shéi dōu lěng​mò.

   You like everyone; that is to say, you are indifferent to everyone.

   Source: CCMatrix